Exam 10: Air Quality

Great progress has been made I removing ___ from the environment, due to changes ii gasoline formulations.

The 1990 version of the Clean Air Act incorporated a feature to provide relief to an individual manufacturing plant that might temporarily need to increase its emission of a pollutant.This was called

Acid rain is likely to contain

Pollution limits are

Removing harmful sulfur dioxide (SO₂) from stack gases after coal is burned is

Air pollution problems were essentially non-existent until the 20^th century.

Acid fog, found at high altitudes, has been observed to have a pH of

The Clean Air Act generally separates air pollutants into two categories:

The rapid combination of a material with oxygen, accompanied by the evolution of he amounts of heat and gases, is known as

Emissions of toxic air pollutants in the US are controlled by the

A form of coal which produces less harmful smoke when burned is called

Products of burning coal in air can include

Products of burning coal in air can include

Secondary air pollutants are

Coal (carbon) tends to burn to produce energy and

Smoke is

Probably the most critical of all substances taken into the human body is

Fly ash is

Industrial smog is related to

Acidic air pollution damages