Question

Why was 1990 an important year regarding air quality?

The United States took first steps to keep the air clean.
The United States created the Environmental Protection Agency.
Modifications and improvements were made to the Clean Air Act.
Funding was established under the Clean Air Act to study air pollution.

Answer 1

The law was amended in 1990 in which modifications and improvements were made to the Clean Air Act. There was the need to reduce acid rain, toxic emissions which could deplete the ozone layer and cause varying respiratory illnesses in humans and to increase visibility.

Answer 2

Answer:

The year 1990 was an important year because the Modification and Improvements were made to the Clean Air Act.

The purpose of this act was to reduce the 4 main problems

1. Air Pollution
2. Acid Rain
3. Toxic Emissions
4. Depletion of Ozone layer

The modification made were to control acid rains and for the issuance of stationary source operating permits.

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