Choose the best answer to each of the following questions.What has caused changes in our environment?
A. The air we breathe.
B. The water we drink.
C. Growth of industries and population.
D. Both A and B.
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Which of the following is NOT a form of air pollutants?
A. Nitrogen and oxygen.
B. Automobile exhaust.
C. Factory fumes.
D. Smoke from forest fires.
Which of the following is true about water pollution?
A. Water becomes polluted only because of chemicals from factories.
B. Waste from mines can make water safe for swimming or bathing.
C. Water animals in polluted water may carry pollutants.
D. Water animals may pass pollutants to other animals, but not humans.
Which is of the following is NOT a cause for land pollution?
A. Dumping of used plastic bags.
B. Throwing away waste food.
C. Dumping of factory-made substances.
D. Toxic waste leaking from factories.
5. Which of the following is true about noise pollution?
A. Noise pollution does not disturb our life.
B. Noise pollution has harmful effects on humans, not on animals.
C. Noise pollution can affect animals, but not humans.
D. Noise pollution can have harmful effects on both humans and animals.
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