When Air Pollution Episodes Occur They Generally Result from a Dramatic

Q80: These are also known as hydrocarbons:_ .

Q81: Inversions aloft are often developed in association

Q82: Important sources of_- include power plants, smelters,

Q83: A number of lakes in North America

Q84: Air pollution levels that may be life-

Q86: Air pollution is likely to be most

Q87: Smog is an example of a_ pollutant.<br>A)

Q88: These six pollutants are known as the

Q89: As many as 12,000 people may have

Q90: Between 1990 and 2012, emissions of the