alleryOzone depletion is caused chiefly by which pollutants?
AChlorofluorocarbons
BCarbon monoxide
CNatural water vapour
DPure nitrogen gas
Answer & Solution
Correct answer: A. Chlorofluorocarbons
1. Ozone depletion is a result of air pollution.
2. It comes chiefly from chlorofluorocarbons and other ozone-depleting substances.
3. Nitrogen gas and water vapour are natural air components.
_Source: Wikipedia, Atmosphere of Earth, Air pollution_
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