What is the greatest single source of air pollution in the United States?
A) Waste incineration
B) Power plants
C) Motor vehicles
D) Molds

Name: What is the greatest single source of air pollution in the United States? A) Waste incineration B) Power plants C) Motor vehicles D) Molds
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Question

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Motor vehicles are the greatest single source of air pollution in the United States, primarily due to the vast number of vehicles on the road emitting pollutants such as nitrogen oxides, carbon monoxide, and hydrocarbons.

What Is the Greatest Single Source of Air Pollution in the United