Prepare for the Earth Science and Environmental Pollution Test. Study with engaging quizzes and detailed explanations on complex topics. Master your exam preparation here!

Multiple Choice

Which are main duties of the U.S. Clean Air Act in controlling air pollution?

The Clean Air Act targets both where air pollutants come from and what counts as clean air. It regulates emissions from stationary sources like factories and power plants and from mobile sources such as cars and trucks, and it sets National Ambient Air Quality Standards that define acceptable levels of key pollutants in outdoor air. It also requires permits for major emitters and supports state-implementation plans to meet those standards, with enforcement to keep pollution in check. Water quality standards belong to the Clean Water Act, and tax credits for renewable energy aren’t a main duty of the Clean Air Act. So the described combination of regulating both stationary and mobile sources, setting ambient standards, and requiring permits captures the act’s primary role.

The Clean Air Act targets both where air pollutants come from and what counts as clean air. It regulates emissions from stationary sources like factories and power plants and from mobile sources such as cars and trucks, and it sets National Ambient Air Quality Standards that define acceptable levels of key pollutants in outdoor air. It also requires permits for major emitters and supports state-implementation plans to meet those standards, with enforcement to keep pollution in check. Water quality standards belong to the Clean Water Act, and tax credits for renewable energy aren’t a main duty of the Clean Air Act. So the described combination of regulating both stationary and mobile sources, setting ambient standards, and requiring permits captures the act’s primary role.