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Sagot :
Final answer:
The Clean Air Act was amended in 1990 to reduce sulfur dioxide emissions from electric power plants, aiming to curb acid rain pollutants.
Explanation:
The government changed the Clean Air Act in 1990 to reduce acid rain pollutants, specifically sulfur dioxide emissions from electric power plants. The amendments created tradable emission permits allocated to utility companies to control pollution caused by coal combustion, particularly sulfur dioxide emissions.
Learn more about Clean Air Act amendments in 1990 here:
https://brainly.com/question/11163080
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