What was the major improvement to air quality contributed by the 1990 amendments to the Clean Air Act?
A. The amendments required a significant reduction in 189 toxic chemicals.
B. The amendments required significant reductions in the original 7 toxic chemicals listed.
C. The amendments required "superclean" or zero emission vehicles.
D. The amendments required a significant decrease in indoor air pollutants.
Answer (2)
The 1990 amendments to the Clean Air Act required a significant reduction in 189 toxic chemicals, which broadened the regulation of air pollutants. This was a crucial step forward in improving air quality and public health. The chosen answer is option A.
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The 1990 amendments to the Clean Air Act primarily required a significant reduction in 189 toxic chemicals, enhancing air quality. This approach broadened the scope of air pollution regulation beyond the original 7 toxic chemicals. It set a new standard for addressing hazardous air pollutants effectively. ;
