The Intergovernmental Panel on Climate Change reported in 2007 that atmospheric carbon dioxide levels will nearly double by the end of this century. If this happens, what will be the atmospheric concentration of carbon dioxide?

A. 700 ppm
B. 2.0 ppm
C. 560 ppm
D. 385 ppm
E. 3.5 ppm


Answer: A

Biology & Microbiology

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