The largest source of air pollutants in the United States is/are __________.
A) power plants
B) transportation
C) factories
D) wood-burning stoves

Question

Quizplus · Accepted Answer

According to the Environmental Protection Agency, transportation is the largest source of air pollutants in the United States, accounting for over half of all nitrogen oxide emissions and over a quarter of all greenhouse gas emissions. While power plants and factories are also significant sources of air pollution, they have been subject to tighter regulations in recent years and have decreased their emissions accordingly. Wood-burning stoves contribute to air pollution, but they are not as widespread as transportation emissions.

The Largest Source of Air Pollutants in the United States