Why was 1990 an important year regarding air quality

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asked Nov 9, 2022 148k views

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Dcarlson · Answer 1 · 2022-11-09T19:22:02+0000

Answer:

Why was 1990 an important year regarding air quality? ... The United States took first steps to keep the air clean. Cost-effective ways to reduce pollution were emphasized. The United States created the environmental protection agency

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Bertrand Bordage · Answer 2 · 2022-11-13T11:33:27+0000

Answer:

The United States took first steps to keep the air clean. Cost-effective ways to reduce pollution were emphasized. The United States created the environmental protection agency. Hope this helps

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Why was 1990 an important year regarding air quality

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