Biology
Biology, 11.12.2019 03:31, scavalieri2421

Many scientists believe that the current period of global warming is related to increased levels of?

a. radon being released from the earth's soil

b. nitrogen in the earth's atmosphere

c. carbon dioxide in the earth's atmosphere

d. hydrogen in the outermost layer of the earth's atmosphere

only answer if 100% sure you are correct

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