Which one of the following is the main culprit in the thinning of Ozone layer in the earth's stratosphere?
Correct answer: B. Chlorofluorocarbons
- A. Carbon dioxide
- B. Chlorofluorocarbons
- C. Nitrogen oxides
- D. Methane
Explanation
Chlorofluorocarbons reach the stratosphere, where ultraviolet radiation releases chlorine atoms that catalytically destroy ozone. Carbon dioxide and methane mainly contribute to warming rather than being the principal cause of ozone thinning.
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Environmental science covers ecosystems, food chains and webs, energy flow, biogeochemical cycles, biodiversity, natural resources and population effects. Atmospheric study includes the layers and composition of air, weather and climate, greenhouse gases, global warming, ozone depletion, acid rain and pollution, with climate change distinguished from ordinary weather variation.
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