Volumetrically, the largest non-point source of pollution in the United States is
A. forested land.
B. cropland.
C. mine sites.
D. urban storm water runoff.
Answer: B
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In general, domesticated land can be said to include
A) more than half of the Earth's land surface, with some human influence on most of the rest. B) more than half of the Earth's land surface, with little human influence on most of the rest. C) less than half of Earth's land surface, with some human influence on most of the rest. D) less than half of Earth's land surface, with little human influence on most of the rest.
Wastewater comprises about ________ percent of the flow of U.S. rivers
A) 8 B) 25 C) 15 D) 50 E) 33
Suppose Earth's rotation axis were vertical (instead of titlted). How would that affect seasons here in Akron if we neglect the 3% orbital distance change?
A) Only one season all year.
B) Seasons reversed.
C) No change to seasons.
Famine is a regular event in the dryland Sahel region of
A) Australia. B) Central America. C) Africa. D) southeast Asia.