Which human activity is directly responsible for the creation of "Ozone Holes" in the upper atmosphere?

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A Burning of fossil fuels in transport vehicles
B Release of chlorofluorocarbons (CFCs) from refrigerators and aerosols
C Extensive use of plastic single-use bags
D Heavy discharge of untreated sewage into rivers

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Answer: B. Release of chlorofluorocarbons (CFCs) from refrigerators and aerosols

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• Explanation: B is correct because chlorine atoms released from CFCs act as a catalyst to continuously destroy ozone molecules.

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Which human activity is directly responsible for the creation of "Ozone Holes" in the upper atmosphere?

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