Since the passage of the _______ Act in 1990, the pH of rivers and lakes in the eastern United States has increased, largely due to decreased levels of _______ emissions.

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The Answer of Since the passage of the _______ Act in 1990, the pH of rivers and lakes in the eastern United States has increased, largely due to decreased levels of _______ emissions.

Since the Passage of the _______ Act in 1990, the PH