Which step would be most likely to have the greatest effect on improving outdoor air pollution?
A) drastic reduction in the use of aerosol cans
B) drastic reduction in cigarette smoking
C) drastic reduction in radon emissions
D) significant reduction in automobile use
E) drastic reduction in burning firewood
D
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One disadvantage of using tidal power is that it ____
a. has high operating costs. b. requires a large amount of man power. c. cannot sustain the world's needs. d. adds pollutants to the air. e. utilizes technology that is cost prohibive
Entrainment:
A) feeds cloud growth. B) usually increases the positive buoyancy of unstable air. C) warms cloud margins. D) brings unsaturated air into clouds.
Shades of gray or green in iron-bearing rocks are caused by:
a. native iron b. ferric iron c. ferrous iron d. oxidized iron
Earth's elliptical orbit around the sun (eccentricity) is mostly constant, only changing negligibly over a 100,000 year period
Indicate whether the statement is true or false