A rock that is 2,000 million years old comes from the ________ Era
A) Phanerozoic
B) Paleozoic
C) Proterozoic
D) Paleoproterozoic
Answer: D
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The global human population is expected to
A) grow faster and faster over the next century. B) crash in the next century. C) exceed 10 billion by 2100. D) begin to decrease by 2100.
Moving toward the poles, climate becomes
A) warmer. B) colder. C) wetter. D) more tropical.
In the middle latitudes of the Northern Hemisphere, surface winds tend to blow ____________________ and ____________________ around an area of surface low pressure
Fill in the blank with correct word.
Evidence for dark matter is exhibited by the
A. speed at which galaxies orbit one another within clusters. B. degree to which galaxy clusters exhibit gravitational lensing effects. C. relatively similar speeds at which all stars in a galaxy orbit the galactic nucleus. D. all of the above