Particulate matter is a dangerous pollutant because it
A. replaces oxygen in the blood.
B. results in heart attacks.
C. irritates the lining of the respiratory tract.
D. decreases asthma rates.
Answer: C
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The type of structure shown in this figure is a(n)
A) thrust fault.
B) anticline.
C) syncline.
D) monocline.
E) basin.
Dioxins, pesticides, and polychlorinated biphenyls are all types of
A. Toxic organic compounds B. Suspended solids and BODs C. Heavy metals D. Acidifying agents E. Inorganic toxic substances
An explanation for some natural phenomenon that is testable and is supported by a large body of
evidence (e.g., plate tectonics): a. hypothesis d. principle b. scientific law e. theory c. transgression
A region with long, very cold winters and average temperatures that exceed 50°F only one or two months during the summer has a(n) ____ climate
A) subpolar (Dfc) B) polar tundra (ET) C) polar ice cap (EF) D) alpine (An)