Final answer:
The Clean Air Act has been cost-effective in improving air quality and public health.
Step-by-step explanation:
The Clean Air Act has been cost-effective in improving air quality and public health.
For example, the Act has significantly reduced emissions of harmful pollutants such as particulate matter, nitrogen oxides, and sulfur dioxide. These reductions have led to improvements in air quality, reduced respiratory illnesses, and saved lives.
Furthermore, the economic benefits of the Clean Air Act outweigh its costs. Studies have shown that the Act has stimulated innovation, created jobs in environmental industries, and resulted in economic savings due to improved public health.