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Which one of the following is the main culprit in the thinning of Ozone layer in the earth’s stratosphere?

ACarbon dioxide
BChlorofluorocarbons
CNitrogen oxides
DMethane

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Correct Answer: B: Chlorofluorocarbons

Explanation: The correct answer is B: Chlorofluorocarbons. Chlorofluorocarbons (CFCs) are the main culprit in the thinning of the ozone layer. These synthetic chemicals were used in refrigerators and aerosols, releasing chlorine atoms that destroy ozone molecules.

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