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Chemistry, 26.08.2020 19:01 eddsworldfrantic
Why was 1990 an important year regarding air quality?
O The United States took first steps to keep the air clean.
O The United States created the Environmental Protection Agency.
Modifications and improvements were made to the Clean Air Act.
O Funding was established under the Clean Air Act to study air pollution.
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Why was 1990 an important year regarding air quality?
O The United States took first steps to keep...
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