Although many processes are involved, clearly combustion of fossil fuels is the most important factor driving the global increase in atmospheric ________ and thus global warming.
A) ozone
B) CFCs
C) nitrates
D) oxygen
E) CO₂

Question

Quizplus · Accepted Answer

Combustion of fossil fuels releases large amounts of carbon dioxide (CO₂) into the atmosphere, which is the most important factor driving the global increase in atmospheric CO₂ concentration and therefore global warming. Ozone, CFCs, nitrates, and oxygen are not directly related to the combustion of fossil fuels, although they may have indirect effects on the environment and climate.

Although Many Processes Are Involved, Clearly Combustion of Fossil Fuels