In the U.S.air is much cleaner now than it was when the Clean Air Act was first passed.

Name: In the U.S.air is much cleaner now than it was when the Clean Air Act was first passed.
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The Clean Air Act was passed in 1963, and significant progress has been made in reducing air pollution since then through various regulations and technological advancements. As a result, air quality has improved in many areas of the country, making it cleaner than it was several decades ago.

In the USair Is Much Cleaner Now Than It Was When the When