Practice Exercise
Passage - 1
Comprising over 70% of the Earth's surface, water is undoubtedly the most precious natural resource that exists on our planet. Without the seemingly invaluable compound comprised of hydrogen and oxygen, life on the Earth would be non- existent. It is essential for everything on our planet to grow and prosper. Although we as humans recognize this fact, we disregard it by polluting our rivers, lakes and oceans. Subsequently, we are slowly but surely harming our planet to the point where organisms are dying at a very alarming rate. In addition to innocent organisms dying off, our drinking water has become greatly affected as is our ability to use water for recreational purposes. In order to combat water pollution, we must understand the problems and become part of the solution.
Water is made up of?
(A) Hydrogen
(B) Oxygen
(C) Carbon
(D) Hydrogen and oxygen
(E) None of these
Answer: (d)
Explanation:
Water is made up of Oxygen and Hydrogen.
Who is responsible for polluting water bodies?
(A) Human
(B) Animal
(C) Nature
(D) None of these
Answer: (A)
Explanation:
Human beings are responsible for polluting water bodies.
Why aquatic animals are dying?
(A) Because of life cycle
(B) Because of pollution
(C) Because of nature
(D) All of these
(E) None of these
Answer: (B)
Explanation:
Aquatic animals are dying because of pollution.
How can we collectively prevent the water pollution?
(A) By fencing the water bodies
(B) By cleaning the air
(C) By becoming part of the solution
(D) By publishing advertisements in newspapers
(E) None of these
Answer: (c)
Explanation:
We can prevent the water pollution collectively by being a part of the solution.
Passage - 2
Soil pollution comprises the pollution of soils with materials, mostly chemicals that are out of place or are present at concentrations higher than normal which may have adverse effects on humans or other organisms. It is difficult to define soil pollution exactly because different opinions exist on how to characterize a pollutant; while some consider the use of pesticides acceptable if their effect does not exceed the intended result, others do not consider any use of pesticides or even chemical fertilizers acceptable. However, soil pollution is also caused by means other than the direct addition of xenobiotic (man-made) chemicals such as agricultural runoff waters, industrial waste materials, acidic precipitates, and radioactive fallout.
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