The primary source of carbon monoxide (CO) is

Question

Quizplus · Accepted Answer

The primary source of carbon monoxide (CO) is the automobile, as it is produced by incomplete combustion of gasoline in the engine. Other sources include industrial processes and wildfires, but the majority of CO emissions come from transportation. Burning processes in the presence of air can also produce CO, but it is not the primary source. Carbon dioxide cannot directly produce CO. Electrical power plants may produce CO as a byproduct, but it is not their primary source.

The Primary Source of Carbon Monoxide (CO) Is