The Clean Air Act has how many provisions?

Which of the following is not a goal of the Clean Air Act?

The device in cars that reduces the amount of air pollutants in emissions is called

Gas once contained _______, which was one of the emissions from the exhaust system. It can cause problems from behavioral disorders to mental retardation.

_________ remove pollutants or change them chemically before they leave factory smokestacks.

The _____________ is the area of lowered ozone concentration over Antarctica.

____________ is a chemical compound that reacts with the ozone and destroys it.

The ___________________________ was signed by many nations and called for major cuts in CFC manufacture.

The _____________ is beneficial in blocking UV rays from the sun

Since ___________ 1975 all new cars have had catalytic converters.

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