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Which of the following has contributed most to the overall warming of the earth’s atmosphere?A) the depletion of the ozoneB) the occurrence of acid rainC) the burning of fossil fuelsD) the melting of the polar ice caps

User Jaimy
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Global warming is caused by the accumulation of an excess of greenhouse gases, such as carbon dioxide and methane, which prevent the heat of the sun from escaping.

One of the primary sources of carbon dioxide is the burning of fossil fuels (option C).

User Karenu
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