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17-11-2018
Chemistry

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why was 1990 an important year regarding air quality?

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elisaalonso8805 elisaalonso8805

16-01-2019

Why was 1990 an important year regarding air quality? Check all that apply.

2.Cost-effective ways to reduce pollution were emphasized.

4.Modifications and improvements were made to the Clean Air Act.

i just took the test this is 100% correct

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tcarter22 tcarter22

11-10-2019

Answer:

100%

2 and 4

Explanation:

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