What was the importance of the clean air act of 1970 to the environment? a. it established federal emissions standards. b. it identified sources of air pollution. c. it set a timetable for cleaner air. d. it offered businesses incentives to stop polluting. e. it allowed the burning of low sulfur oil.

A. It established federal emissions standards

The enactment of the Clean Air Act of 1970 (1970 CAA) resulted in a major shift in the federal government's role in air pollution control. This legislation authorized the development of comprehensive federal and state regulations to limit emissions from both stationary (industrial) sources and mobile sources.

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