Under the Clean Air Act, _____ standards for air quality are designed to protect vegetation, materials, climate, visibility, and economic values.

Question

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Under the Clean Air Act, the ambient air quality standards are to be set at two levels: (1) primary standards, which are designed to protect the public's health from harm, and (2) secondary standards, which are designed to protect vegetation, materials, climate, visibility, and economic values.

Under the Clean Air Act, _____ Standards for Air Quality