Geography
AstridUnch232
26

Many scientists believe that the current period of global warming is related to increased levels of ___ . A. nitrogen in the Earth's atmosphere. B. radon being released from the Earth's soil. C. carbon dioxide in the Earth's atmosphere. D. hydrogen in the outermost layer of the Earth's atmosphere.

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(2) Answers
BrunoMackedanz

They believe global warming is caused by an increase in levels of carbon dioxide.

lucasrrcosta1

C. carbon dioxide in the Earth's atmosphere

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