Earth pulls the Moon. Similarly, Moon pulls Earth. We can say that
A. Earth's and Moon's pulls comprise an action-reaction pair.
B. Earth and Moon pull on each other.
C. both of the above
D. none of the above
Answer: C
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If accumulation exceeds ablation in a glacial budget, which of the following will happen?
A) The terminus will move downhill ("advance"). B) The terminus will shift uphill ("retreat"). C) The glacier will begin to flow uphill. D) The glacier will melt away due to climate change.
Which of the following locations best represents the Ekman spiral current?
A. A B. B C. C D. D
The leading nonpoint source of water pollution is
A. municipal landfills. B. runoff from city streets and storm sewers. C. agriculture. D. industrial wastes. E. leaks from offshore oil wells.
What kind of volcano erupts runny lava?
A. cinder cone B. shield C. composite D. basaltic