1.

The relative contributions of carbon dioxide (CO2), nitrous oxide (N2O), chlorofluorocarbons (CFCs) and methane (CH4) towards global warming are

A. CO2 > CFCs > CH4 > N2O
B. CO2 > CH4 > CFCs > N2O
C. CO2 > CH4 > N2O > CFCs
D. CO2 > N2O > CH4 > CFCs
Answer» D. CO2 > N2O > CH4 > CFCs


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