In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
One of 1.______ era's greatest scourges is air pollution, on account not only of its impact on climate change 2.______ its impact on public and individual health due to increasing morbidity and mortality. There are 3.______ pollutants that are major factors in disease in humans. Among them, Particulate Matter (PM), particles of variable but very small diameter, penetrate the respiratory system via inhalation, causing respiratory and cardiovascular diseases, reproductive and central nervous system dysfunctions, and cancer. 4.______ the fact that ozone in the stratosphere plays a protective role against ultraviolet irradiation, it is harmful when in high concentration at ground level, also affecting the respiratory and cardiovascular system. Furthermore, nitrogen oxide, sulphur dioxide, Volatile Organic Compounds (VOCs), dioxins, and polycyclic aromatic hydrocarbons are all considered air pollutants that are 5.______ to humans.

Select the most appropriate option to fill in blank no. 5.

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.

Delhi National Zoological Park, which opened in 1959, is (1.) ________ next to the well-known Old Fort. One of the top zoos in the entire Asian continent, it stands out for its (2.) ________ to give the animals and the birds housed there a habitat that is as close to natural as possible. With a total area of 214 acres, it is perfect for picnics, (3.) ________ in the winter. The National Zoological Gardens in New Delhi are home to over 2,000 different animal and bird (4.) ________. These animals and birds, which originate from many areas such as Africa, America, Australia, etc., (5.) _______ a home at this zoo. The Mughal Kos Minar serves as the Delhi Zoo's entrance.

Select the most appropriate option to fill in blank number 4.

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
The environment of the earth is a great (1)___ to mankind. It is a pity that this environment is in grave danger of being (2)____, and that this danger is being posed by man himself. Humans have seldom given thought to the fact that the air they breathe, the water they drink, or the food they eat could be (3)____. They have always assumed the bounties of nature to be inexhaustible. There is little (4)_____ on their part that what they consider progress is seriously disturbing the ecological balance and (5)_____ to the breakdown of the life-supporting systems on the earth.

Select the most appropriate option to fill in blank number 2.

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
Our beautiful ecosystem is being systematically (1)____ by industrial pollution channelled into rivers like the Ganga and the Yamuna, nuclear wastes from atomic plants muted into the world’s oceans, and (2)____ gases such as carbon dioxide mixed with the ozonosphere. Besides, tropical rainforests and green pastures are disappearing (3)_____ the pressure of a proliferating population. Dams are being (4)_____ over the rivers like the Narmada to change nature’s well-balanced surface equations between flora and fauna, and sloping mountainous terrain is being converted into mini oceans to supply electricity to the ever-starving industrial stomach of our age. Elephants, tigers, the wild rhinos of South Africa and many other forest creatures have become (5)_____ species.

Select the most appropriate option to fill in blank number 2.

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
Our beautiful ecosystem is being systematically (1)____ by industrial pollution channelled into rivers like the Ganga and the Yamuna, nuclear wastes from atomic plants muted into the world’s oceans, and (2)____ gases such as carbon dioxide mixed with the ozonosphere. Besides, tropical rainforests and green pastures are disappearing (3)_____ the pressure of a proliferating population. Dams are being (4)_____ over the rivers like the Narmada to change nature’s well-balanced surface equations between flora and fauna, and sloping mountainous terrain is being converted into mini oceans to supply electricity to the ever-starving industrial stomach of our age. Elephants, tigers, the wild rhinos of South Africa and many other forest creatures have become (5)_____ species.

Select the most appropriate option to fill in blank number 3.

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
Our beautiful ecosystem is being systematically (1)____ by industrial pollution channelled into rivers like the Ganga and the Yamuna, nuclear wastes from atomic plants muted into the world’s oceans, and (2)____ gases such as carbon dioxide mixed with the ozonosphere. Besides, tropical rainforests and green pastures are disappearing (3)_____ the pressure of a proliferating population. Dams are being (4)_____ over the rivers like the Narmada to change nature’s well-balanced surface equations between flora and fauna, and sloping mountainous terrain is being converted into mini oceans to supply electricity to the ever-starving industrial stomach of our age. Elephants, tigers, the wild rhinos of South Africa and many other forest creatures have become (5)_____ species.

Select the most appropriate option to fill in blank number 4.

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
The environment of the earth is a great (1)___ to mankind. It is a pity that this environment is in grave danger of being (2)____, and that this danger is being posed by man himself. Humans have seldom given thought to the fact that the air they breathe, the water they drink, or the food they eat could be (3)____. They have always assumed the bounties of nature to be inexhaustible. There is little (4)_____ on their part that what they consider progress is seriously disturbing the ecological balance and (5)_____ to the breakdown of the life-supporting systems on the earth.

Select the most appropriate option to fill in blank number 3.

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
Our beautiful ecosystem is being systematically (1)____ by industrial pollution channelled into rivers like the Ganga and the Yamuna, nuclear wastes from atomic plants muted into the world’s oceans, and (2)____ gases such as carbon dioxide mixed with the ozonosphere. Besides, tropical rainforests and green pastures are disappearing (3)_____ the pressure of a proliferating population. Dams are being (4)_____ over the rivers like the Narmada to change nature’s well-balanced surface equations between flora and fauna, and sloping mountainous terrain is being converted into mini oceans to supply electricity to the ever-starving industrial stomach of our age. Elephants, tigers, the wild rhinos of South Africa and many other forest creatures have become (5)_____ species.

Select the most appropriate option to fill in blank number 5.

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
Our beautiful ecosystem is being systematically (1)____ by industrial pollution channelled into rivers like the Ganga and the Yamuna, nuclear wastes from atomic plants muted into the world’s oceans, and (2)____ gases such as carbon dioxide mixed with the ozonosphere. Besides, tropical rainforests and green pastures are disappearing (3)_____ the pressure of a proliferating population. Dams are being (4)_____ over the rivers like the Narmada to change nature’s well-balanced surface equations between flora and fauna, and sloping mountainous terrain is being converted into mini oceans to supply electricity to the ever-starving industrial stomach of our age. Elephants, tigers, the wild rhinos of South Africa and many other forest creatures have become (5)_____ species.

Select the most appropriate option to fill in blank number 1.

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
The environment of the earth is a great (1)___ to mankind. It is a pity that this environment is in grave danger of being (2)____, and that this danger is being posed by man himself. Humans have seldom given thought to the fact that the air they breathe, the water they drink, or the food they eat could be (3)____. They have always assumed the bounties of nature to be inexhaustible. There is little (4)_____ on their part that what they consider progress is seriously disturbing the ecological balance and (5)_____ to the breakdown of the life-supporting systems on the earth.

Select the most appropriate option to fill in blank number 4.

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
The environment of the earth is a great (1)___ to mankind. It is a pity that this environment is in grave danger of being (2)____, and that this danger is being posed by man himself. Humans have seldom given thought to the fact that the air they breathe, the water they drink, or the food they eat could be (3)____. They have always assumed the bounties of nature to be inexhaustible. There is little (4)_____ on their part that what they consider progress is seriously disturbing the ecological balance and (5)_____ to the breakdown of the life-supporting systems on the earth.

Select the most appropriate option to fill in blank number 5.

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
The environment of the earth is a great (1)___ to mankind. It is a pity that this environment is in grave danger of being (2)____, and that this danger is being posed by man himself. Humans have seldom given thought to the fact that the air they breathe, the water they drink, or the food they eat could be (3)____. They have always assumed the bounties of nature to be inexhaustible. There is little (4)_____ on their part that what they consider progress is seriously disturbing the ecological balance and (5)_____ to the breakdown of the life-supporting systems on the earth.

Select the most appropriate option to fill in blank number 1.

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.

Deforestation, wildfires and pollution cause animals (1) _________lose their homes. Animals may be (2) _________ by their surroundings. Most individuals are (3) __________ that they are taking down an animal's home when they cut down trees for wood. Animal (4) ___________ is also lost as a result of wildfires. The main causes of an animal becoming (5)_________ are poaching and smuggling. Pollution is extremely harmful to animals and their environments. Animals are interested and try to eat the pollution-causing things. Furthermore, some rivers and natural resources are becoming polluted, forcing animals to relocate.

Select the most appropriate option to fill in blank number 1.

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.

Deforestation, wildfires and pollution cause animals (1) _________lose their homes. Animals may be (2) _________ by their surroundings. Most individuals are (3) __________ that they are taking down an animal's home when they cut down trees for wood. Animal (4) ___________ is also lost as a result of wildfires. The main causes of an animal becoming (5)_________ are poaching and smuggling. Pollution is extremely harmful to animals and their environments. Animals are interested and try to eat the pollution-causing things. Furthermore, some rivers and natural resources are becoming polluted, forcing animals to relocate.

Select the most appropriate option to fill in blank number 2.

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.

Deforestation, wildfires and pollution cause animals (1) _________lose their homes. Animals may be (2) _________ by their surroundings. Most individuals are (3) __________ that they are taking down an animal's home when they cut down trees for wood. Animal (4) ___________ is also lost as a result of wildfires. The main causes of an animal becoming (5)_________ are poaching and smuggling. Pollution is extremely harmful to animals and their environments. Animals are interested and try to eat the pollution-causing things. Furthermore, some rivers and natural resources are becoming polluted, forcing animals to relocate.

Select the most appropriate option to fill in blank number 5.

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.

Deforestation, wildfires and pollution cause animals (1) _________lose their homes. Animals may be (2) _________ by their surroundings. Most individuals are (3) __________ that they are taking down an animal's home when they cut down trees for wood. Animal (4) ___________ is also lost as a result of wildfires. The main causes of an animal becoming (5)_________ are poaching and smuggling. Pollution is extremely harmful to animals and their environments. Animals are interested and try to eat the pollution-causing things. Furthermore, some rivers and natural resources are becoming polluted, forcing animals to relocate.

Select the most appropriate option to fill in blank number 4.

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.

The saving of certain wild animals from extinction (1)_____ many years been a problem for the zoologists and other specialists; but more recently the problem has become so (2)_____, and has received so much publicity, that most people are now (3)_______ about it. This may at first seem strange because one of the most gratifying developments of the last few years has been the passing of strict laws to protect wild animals and the (4)_________ decline in the hunting of big-game for sport. Why is it then that some rare wild animals are still (5)________ with extinction and even some of the less rare ones are rapidly declining in number?

Select the most appropriate option to fill in the blank 5.

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.

Deforestation, wildfires and pollution cause animals (1) _________lose their homes. Animals may be (2) _________ by their surroundings. Most individuals are (3) __________ that they are taking down an animal's home when they cut down trees for wood. Animal (4) ___________ is also lost as a result of wildfires. The main causes of an animal becoming (5)_________ are poaching and smuggling. Pollution is extremely harmful to animals and their environments. Animals are interested and try to eat the pollution-causing things. Furthermore, some rivers and natural resources are becoming polluted, forcing animals to relocate.

Select the most appropriate option to fill in blank number 3.

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
The concept of (1)________ refers to the ability of an organism to change in response to its environment. Adaptation can occur through (2)________, which involves genetic changes passed down from one generation to the next, or (3)________ ontogeny, which involves changes in an individual's lifetime. Adaptation is a fundamental concept in biology, and it plays a crucial role in the (4) ________ of species over time. Organisms that are well-adapted (5)________ their environment are more likely to survive and pass on their genes to future generations.

Select the most appropriate option to fill in blank 2.

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
The concept of (1)________ refers to the ability of an organism to change in response to its environment. Adaptation can occur through (2)________, which involves genetic changes passed down from one generation to the next, or (3)________ ontogeny, which involves changes in an individual's lifetime. Adaptation is a fundamental concept in biology, and it plays a crucial role in the (4) ________ of species over time. Organisms that are well-adapted (5)________ their environment are more likely to survive and pass on their genes to future generations.

Select the most appropriate option to fill in blank 3.

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.

The saving of certain wild animals from extinction (1)_____ many years been a problem for the zoologists and other specialists; but more recently the problem has become so (2)_____, and has received so much publicity, that most people are now (3)_______ about it. This may at first seem strange because one of the most gratifying developments of the last few years has been the passing of strict laws to protect wild animals and the (4)_________ decline in the hunting of big-game for sport. Why is it then that some rare wild animals are still (5)________ with extinction and even some of the less rare ones are rapidly declining in number?

Select the most appropriate option to fill in the blank 4.

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.

The saving of certain wild animals from extinction (1)_____ many years been a problem for the zoologists and other specialists; but more recently the problem has become so (2)_____, and has received so much publicity, that most people are now (3)_______ about it. This may at first seem strange because one of the most gratifying developments of the last few years has been the passing of strict laws to protect wild animals and the (4)_________ decline in the hunting of big-game for sport. Why is it then that some rare wild animals are still (5)________ with extinction and even some of the less rare ones are rapidly declining in number?

Select the most appropriate option to fill in the blank 2.

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
The concept of (1)________ refers to the ability of an organism to change in response to its environment. Adaptation can occur through (2)________, which involves genetic changes passed down from one generation to the next, or (3)________ ontogeny, which involves changes in an individual's lifetime. Adaptation is a fundamental concept in biology, and it plays a crucial role in the (4) ________ of species over time. Organisms that are well-adapted (5)________ their environment are more likely to survive and pass on their genes to future generations.

Select the most appropriate option to fill in blank 4.

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
The concept of (1)________ refers to the ability of an organism to change in response to its environment. Adaptation can occur through (2)________, which involves genetic changes passed down from one generation to the next, or (3)________ ontogeny, which involves changes in an individual's lifetime. Adaptation is a fundamental concept in biology, and it plays a crucial role in the (4) ________ of species over time. Organisms that are well-adapted (5)________ their environment are more likely to survive and pass on their genes to future generations.

Select the most appropriate option to fill in blank 1.

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.

The saving of certain wild animals from extinction (1)_____ many years been a problem for the zoologists and other specialists; but more recently the problem has become so (2)_____, and has received so much publicity, that most people are now (3)_______ about it. This may at first seem strange because one of the most gratifying developments of the last few years has been the passing of strict laws to protect wild animals and the (4)_________ decline in the hunting of big-game for sport. Why is it then that some rare wild animals are still (5)________ with extinction and even some of the less rare ones are rapidly declining in number?

Select the most appropriate option to fill in the blank 1.

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
The concept of (1)________ refers to the ability of an organism to change in response to its environment. Adaptation can occur through (2)________, which involves genetic changes passed down from one generation to the next, or (3)________ ontogeny, which involves changes in an individual's lifetime. Adaptation is a fundamental concept in biology, and it plays a crucial role in the (4) ________ of species over time. Organisms that are well-adapted (5)________ their environment are more likely to survive and pass on their genes to future generations.

Select the most appropriate option to fill in blank 5.

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.

The saving of certain wild animals from extinction (1)_____ many years been a problem for the zoologists and other specialists; but more recently the problem has become so (2)_____, and has received so much publicity, that most people are now (3)_______ about it. This may at first seem strange because one of the most gratifying developments of the last few years has been the passing of strict laws to protect wild animals and the (4)_________ decline in the hunting of big-game for sport. Why is it then that some rare wild animals are still (5)________ with extinction and even some of the less rare ones are rapidly declining in number?

Select the most appropriate option to fill in the blank 3.

In the following passage some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
Swans are large waterbirds that (1)________ to the family Anatidae, which also includes ducks and geese. They (2) ________ for their beauty and grace and are often used as symbols of love, fidelity, and elegance. They are also famous for their (3) ________ features, such as their long necks, large wingspans, and striking white feathers. (4) ________, not all swan species are white; the Black Swan, (5) ________, has black feathers with a red bill. Swans are found on every continent and are known for their strong pair bonds. They mate for life and can live up to 20 years.

Select the most appropriate option to fill in blank number 2.

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
Environmental pollution is a growing (1)________ all around the world as it poses significant risks to human health and ecosystems. The (2)________ of environmental pollution vary from natural causes such as volcanic emissions to human actions, including industrialisation, transportation, energy production and agricultural practices. (3)___________ of these activities, pollutants are released into the air, water bodies and soil leading to harmful effects such as respiratory diseases, loss of biodiversity and climate change. One of the primary causes of environmental pollution is human attitudes towards sustainability (4)_______ their lack of environmental awareness. Human activities that harm the environment and ecosystem often result from individual choices (5)_______ driving or using single-use plastics.

Select the most appropriate option to fill in blank number 4.

In the following passage some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
Swans are large waterbirds that (1)________ to the family Anatidae, which also includes ducks and geese. They (2) ________ for their beauty and grace and are often used as symbols of love, fidelity, and elegance. They are also famous for their (3) ________ features, such as their long necks, large wingspans, and striking white feathers. (4) ________, not all swan species are white; the Black Swan, (5) ________, has black feathers with a red bill. Swans are found on every continent and are known for their strong pair bonds. They mate for life and can live up to 20 years.

Select the most appropriate option to fill in blank number 1.

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
Environmental pollution is a growing (1)________ all around the world as it poses significant risks to human health and ecosystems. The (2)________ of environmental pollution vary from natural causes such as volcanic emissions to human actions, including industrialisation, transportation, energy production and agricultural practices. (3)___________ of these activities, pollutants are released into the air, water bodies and soil leading to harmful effects such as respiratory diseases, loss of biodiversity and climate change. One of the primary causes of environmental pollution is human attitudes towards sustainability (4)_______ their lack of environmental awareness. Human activities that harm the environment and ecosystem often result from individual choices (5)_______ driving or using single-use plastics.

Select the most appropriate option to fill in blank number 5.

In the following passage some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.

Among the largest species of cats in the world, tigers are powerful hunters with (1)________ teeth, strong jaws and agile bodies. They range across Asia from Russia all the way to Sumatra and mainland Southeast Asia. Researchers still have much to learn (2) ________ these beautiful, endangered (3) ________.
There is currently one recognized species of tiger, Panthera tigris. Scientists have further (4) ________ the tiger into nine subspecies: the extinct Bali, Caspian and Javan subspecies, and the living Malayan, Sumatran, South China, Indochinese, Bengal and Amur (or Siberian) subspecies. Of these six subspecies, AZA-accredited zoos currently manage three: Amur, Malayan, and Sumatran. The Smithsonian's National Zoo and Conservation Biology Institute is home to Sumatran and Amur tigers; Sumatran tigers are (5) ________ as Critically Endangered on the International Union for Conservation of Nature's Red List, and Amur tigers have been classified as Endangered.

Select the most appropriate option to fill blank number 3.

In the following passage some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
Swans are large waterbirds that (1)________ to the family Anatidae, which also includes ducks and geese. They (2) ________ for their beauty and grace and are often used as symbols of love, fidelity, and elegance. They are also famous for their (3) ________ features, such as their long necks, large wingspans, and striking white feathers. (4) ________, not all swan species are white; the Black Swan, (5) ________, has black feathers with a red bill. Swans are found on every continent and are known for their strong pair bonds. They mate for life and can live up to 20 years.

Select the most appropriate option to fill in blank number 5.

In the following passage some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.

Among the largest species of cats in the world, tigers are powerful hunters with (1)________ teeth, strong jaws and agile bodies. They range across Asia from Russia all the way to Sumatra and mainland Southeast Asia. Researchers still have much to learn (2) ________ these beautiful, endangered (3) ________.
There is currently one recognized species of tiger, Panthera tigris. Scientists have further (4) ________ the tiger into nine subspecies: the extinct Bali, Caspian and Javan subspecies, and the living Malayan, Sumatran, South China, Indochinese, Bengal and Amur (or Siberian) subspecies. Of these six subspecies, AZA-accredited zoos currently manage three: Amur, Malayan, and Sumatran. The Smithsonian's National Zoo and Conservation Biology Institute is home to Sumatran and Amur tigers; Sumatran tigers are (5) ________ as Critically Endangered on the International Union for Conservation of Nature's Red List, and Amur tigers have been classified as Endangered.

Select the most appropriate option to fill blank number 4.

In the following passage some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.

Among the largest species of cats in the world, tigers are powerful hunters with (1)________ teeth, strong jaws and agile bodies. They range across Asia from Russia all the way to Sumatra and mainland Southeast Asia. Researchers still have much to learn (2) ________ these beautiful, endangered (3) ________.
There is currently one recognized species of tiger, Panthera tigris. Scientists have further (4) ________ the tiger into nine subspecies: the extinct Bali, Caspian and Javan subspecies, and the living Malayan, Sumatran, South China, Indochinese, Bengal and Amur (or Siberian) subspecies. Of these six subspecies, AZA-accredited zoos currently manage three: Amur, Malayan, and Sumatran. The Smithsonian's National Zoo and Conservation Biology Institute is home to Sumatran and Amur tigers; Sumatran tigers are (5) ________ as Critically Endangered on the International Union for Conservation of Nature's Red List, and Amur tigers have been classified as Endangered.

Select the most appropriate option to fill blank number 5.

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
Environmental pollution is a growing (1)________ all around the world as it poses significant risks to human health and ecosystems. The (2)________ of environmental pollution vary from natural causes such as volcanic emissions to human actions, including industrialisation, transportation, energy production and agricultural practices. (3)___________ of these activities, pollutants are released into the air, water bodies and soil leading to harmful effects such as respiratory diseases, loss of biodiversity and climate change. One of the primary causes of environmental pollution is human attitudes towards sustainability (4)_______ their lack of environmental awareness. Human activities that harm the environment and ecosystem often result from individual choices (5)_______ driving or using single-use plastics.

Select the most appropriate option to fill in blank number 1.

In the following passage some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
Swans are large waterbirds that (1)________ to the family Anatidae, which also includes ducks and geese. They (2) ________ for their beauty and grace and are often used as symbols of love, fidelity, and elegance. They are also famous for their (3) ________ features, such as their long necks, large wingspans, and striking white feathers. (4) ________, not all swan species are white; the Black Swan, (5) ________, has black feathers with a red bill. Swans are found on every continent and are known for their strong pair bonds. They mate for life and can live up to 20 years.

Select the most appropriate option to fill in blank number 4.

Select the most appropriate option to fill in the blank.

Because of the loss of ______ and lack of food, animals are forced to enter villages.

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
Environmental pollution is a growing (1)________ all around the world as it poses significant risks to human health and ecosystems. The (2)________ of environmental pollution vary from natural causes such as volcanic emissions to human actions, including industrialisation, transportation, energy production and agricultural practices. (3)___________ of these activities, pollutants are released into the air, water bodies and soil leading to harmful effects such as respiratory diseases, loss of biodiversity and climate change. One of the primary causes of environmental pollution is human attitudes towards sustainability (4)_______ their lack of environmental awareness. Human activities that harm the environment and ecosystem often result from individual choices (5)_______ driving or using single-use plastics.

Select the most appropriate option to fill in blank number 2.

In the following passage some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
Swans are large waterbirds that (1)________ to the family Anatidae, which also includes ducks and geese. They (2) ________ for their beauty and grace and are often used as symbols of love, fidelity, and elegance. They are also famous for their (3) ________ features, such as their long necks, large wingspans, and striking white feathers. (4) ________, not all swan species are white; the Black Swan, (5) ________, has black feathers with a red bill. Swans are found on every continent and are known for their strong pair bonds. They mate for life and can live up to 20 years.

Select the most appropriate option to fill in blank number 3.

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
Environmental pollution is a growing (1)________ all around the world as it poses significant risks to human health and ecosystems. The (2)________ of environmental pollution vary from natural causes such as volcanic emissions to human actions, including industrialisation, transportation, energy production and agricultural practices. (3)___________ of these activities, pollutants are released into the air, water bodies and soil leading to harmful effects such as respiratory diseases, loss of biodiversity and climate change. One of the primary causes of environmental pollution is human attitudes towards sustainability (4)_______ their lack of environmental awareness. Human activities that harm the environment and ecosystem often result from individual choices (5)_______ driving or using single-use plastics.

Select the most appropriate option to fill in blank number 3.

In the following passage some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.

Among the largest species of cats in the world, tigers are powerful hunters with (1)________ teeth, strong jaws and agile bodies. They range across Asia from Russia all the way to Sumatra and mainland Southeast Asia. Researchers still have much to learn (2) ________ these beautiful, endangered (3) ________.
There is currently one recognized species of tiger, Panthera tigris. Scientists have further (4) ________ the tiger into nine subspecies: the extinct Bali, Caspian and Javan subspecies, and the living Malayan, Sumatran, South China, Indochinese, Bengal and Amur (or Siberian) subspecies. Of these six subspecies, AZA-accredited zoos currently manage three: Amur, Malayan, and Sumatran. The Smithsonian's National Zoo and Conservation Biology Institute is home to Sumatran and Amur tigers; Sumatran tigers are (5) ________ as Critically Endangered on the International Union for Conservation of Nature's Red List, and Amur tigers have been classified as Endangered.

Select the most appropriate option to fill blank number 2.

In the following passage some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.

Among the largest species of cats in the world, tigers are powerful hunters with (1)________ teeth, strong jaws and agile bodies. They range across Asia from Russia all the way to Sumatra and mainland Southeast Asia. Researchers still have much to learn (2) ________ these beautiful, endangered (3) ________.
There is currently one recognized species of tiger, Panthera tigris. Scientists have further (4) ________ the tiger into nine subspecies: the extinct Bali, Caspian and Javan subspecies, and the living Malayan, Sumatran, South China, Indochinese, Bengal and Amur (or Siberian) subspecies. Of these six subspecies, AZA-accredited zoos currently manage three: Amur, Malayan, and Sumatran. The Smithsonian's National Zoo and Conservation Biology Institute is home to Sumatran and Amur tigers; Sumatran tigers are (5) ________ as Critically Endangered on the International Union for Conservation of Nature's Red List, and Amur tigers have been classified as Endangered.

Select the most appropriate option to fill blank number 1.

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
The (1) _________ of birds is one of the most fascinating aspects of the natural world. From the soaring flight of eagles to the colourful plumage of parrots, birds have evolved a wide range of (2) _________ to survive and thrive in their environments. One of the most remarkable adaptations is the ability of some birds to migrate over vast distances, often crossing oceans and continents to reach their breeding or wintering grounds. However, many species of birds are facing threats to their survival, such as habitat loss, climate change and (3) _________ by humans. In response, conservation efforts have been put in place to protect these birds and their habitats. This might involve creating protected areas, restoring degraded habitats or reducing the use of pesticides and other harmful chemicals. Another important aspect of bird conservation is (4) _________ populations to track changes over time and identify emerging threats. This can be done through citizen science programmes or through more intensive efforts led by conservation organisations. Ultimately, protecting birds and their habitats is not only important for the birds themselves but also for the broader ecosystems they are a part of, and the many benefits these ecosystems provide to humans, such as clean air and water, and (5) _________ opportunities.

Select the most appropriate option to fill in blank no. 2.

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
The (1) _________ of birds is one of the most fascinating aspects of the natural world. From the soaring flight of eagles to the colourful plumage of parrots, birds have evolved a wide range of (2) _________ to survive and thrive in their environments. One of the most remarkable adaptations is the ability of some birds to migrate over vast distances, often crossing oceans and continents to reach their breeding or wintering grounds. However, many species of birds are facing threats to their survival, such as habitat loss, climate change and (3) _________ by humans. In response, conservation efforts have been put in place to protect these birds and their habitats. This might involve creating protected areas, restoring degraded habitats or reducing the use of pesticides and other harmful chemicals. Another important aspect of bird conservation is (4) _________ populations to track changes over time and identify emerging threats. This can be done through citizen science programmes or through more intensive efforts led by conservation organisations. Ultimately, protecting birds and their habitats is not only important for the birds themselves but also for the broader ecosystems they are a part of, and the many benefits these ecosystems provide to humans, such as clean air and water, and (5) _________ opportunities.

Select the most appropriate option to fill in blank no. 1.

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
The (1) _________ of birds is one of the most fascinating aspects of the natural world. From the soaring flight of eagles to the colourful plumage of parrots, birds have evolved a wide range of (2) _________ to survive and thrive in their environments. One of the most remarkable adaptations is the ability of some birds to migrate over vast distances, often crossing oceans and continents to reach their breeding or wintering grounds. However, many species of birds are facing threats to their survival, such as habitat loss, climate change and (3) _________ by humans. In response, conservation efforts have been put in place to protect these birds and their habitats. This might involve creating protected areas, restoring degraded habitats or reducing the use of pesticides and other harmful chemicals. Another important aspect of bird conservation is (4) _________ populations to track changes over time and identify emerging threats. This can be done through citizen science programmes or through more intensive efforts led by conservation organisations. Ultimately, protecting birds and their habitats is not only important for the birds themselves but also for the broader ecosystems they are a part of, and the many benefits these ecosystems provide to humans, such as clean air and water, and (5) _________ opportunities.

Select the most appropriate option to fill in blank no. 5.

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
The (1) _________ of birds is one of the most fascinating aspects of the natural world. From the soaring flight of eagles to the colourful plumage of parrots, birds have evolved a wide range of (2) _________ to survive and thrive in their environments. One of the most remarkable adaptations is the ability of some birds to migrate over vast distances, often crossing oceans and continents to reach their breeding or wintering grounds. However, many species of birds are facing threats to their survival, such as habitat loss, climate change and (3) _________ by humans. In response, conservation efforts have been put in place to protect these birds and their habitats. This might involve creating protected areas, restoring degraded habitats or reducing the use of pesticides and other harmful chemicals. Another important aspect of bird conservation is (4) _________ populations to track changes over time and identify emerging threats. This can be done through citizen science programmes or through more intensive efforts led by conservation organisations. Ultimately, protecting birds and their habitats is not only important for the birds themselves but also for the broader ecosystems they are a part of, and the many benefits these ecosystems provide to humans, such as clean air and water, and (5) _________ opportunities.

Select the most appropriate option to fill in blank no. 4.

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
The (1) _________ of birds is one of the most fascinating aspects of the natural world. From the soaring flight of eagles to the colourful plumage of parrots, birds have evolved a wide range of (2) _________ to survive and thrive in their environments. One of the most remarkable adaptations is the ability of some birds to migrate over vast distances, often crossing oceans and continents to reach their breeding or wintering grounds. However, many species of birds are facing threats to their survival, such as habitat loss, climate change and (3) _________ by humans. In response, conservation efforts have been put in place to protect these birds and their habitats. This might involve creating protected areas, restoring degraded habitats or reducing the use of pesticides and other harmful chemicals. Another important aspect of bird conservation is (4) _________ populations to track changes over time and identify emerging threats. This can be done through citizen science programmes or through more intensive efforts led by conservation organisations. Ultimately, protecting birds and their habitats is not only important for the birds themselves but also for the broader ecosystems they are a part of, and the many benefits these ecosystems provide to humans, such as clean air and water, and (5) _________ opportunities.

Select the most appropriate option to fill in blank no. 3.

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.

Colonialism had a great impact on the lives of the aboriginal Australians who were eventually (1) _______ by the whites with all power and privilege. The colonisers turned their land into rubbish pits and (2) _______ sites for their own betterment. The aborigines were often (3) _______ as sub-humans with low status and dirty habits. The whites not only displaced the tribes off their homeland but also (4) _______ the beauty and balance of the natural world. An increase in deforestation and destruction of traditional land led (5) _______ like emu, eagle, and kangaroo, among many others to dwindle over time.

Select the most appropriate option to fill in blank number 2.

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.

Colonialism had a great impact on the lives of the aboriginal Australians who were eventually (1) _______ by the whites with all power and privilege. The colonisers turned their land into rubbish pits and (2) _______ sites for their own betterment. The aborigines were often (3) _______ as sub-humans with low status and dirty habits. The whites not only displaced the tribes off their homeland but also (4) _______ the beauty and balance of the natural world. An increase in deforestation and destruction of traditional land led (5) _______ like emu, eagle, and kangaroo, among many others to dwindle over time.

Select the most appropriate option to fill in blank number 4.