contributes the most to global warming?
A) driving motorized vehicles
B) cutting down trees
C) using fossil fuels for energy
scroll down for the answer...
The correct answer is C. Burning fossil fuels for energy contributes the most to global warming compared to any other human activity. About 90% of the energy used around the world comes from coal, oil and natural gas. The carbon dioxide released from obtaining and expending these fossil fuels is the largest source of greenhouse gases from human activities.
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