In the northeastern United States, emissions of ____ are primarily responsible for acid precipitation.
a. benzene
b. sulfur dioxide
c. carbon monoxide
d. volatile organic compounds
e. CFCs
Q. 2The carbon dioxide occurring naturally in the air dissolves in precipitation, making it slightly acidic with a pH between ____.
a. 3.0 and 3.6
b. 4.0 and 4.6
c. 5.0 and 5.6
d. 6.0 and 6.6
e. 7.0 and 7.6
Q. 3____ ecosystems seem to be particularly sensitive to changes in acidity.
a. Freshwater
b. Marine
c. Forest
d. Grassland
e. Alpine
Q. 4Air pollution emitted from industrial areas, especially products of combustion, such as oxides of sulfur and nitrogen, can be carried many kilometers downwind. Sometimes these particles and gases slowly settle to the ground in the dry form of ____.
a. acid fog
b. acid rain
c. acid precipitation
d. dry deposition
e. wet deposition
Q. 5A study conducted in St. Louis, Missouri, showed that precipitation amounts downwind from the city were ____ than ____.
a. less on Mondays; on Fridays
b. greater on weekdays; on weekends
c. greater on weekdays; on weekends
d. greater in spring; in fall
e. less in spring; fall
Q. 6Studies suggest that downwind of a large industrial area ____.
a. average annual precipitation can increase
b. higher surface temperatures are observed
c. pollutants are more concentrated than in the city
d. average annual precipitation can decrease
e. aerosols resulting from pollution inhibit heat transfer
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