Which of the following products is difficult to recycle, clogs sewer pipes, and kills thousands of marine mammals and turtles every year?
A) Aluminum and steel cans
B) Plastic bottles
C) Glass containers
D) Thin plastic grocery bags
D
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The air that follows the passage of a cold front is
A) colder than the air it replaced. B) the same temperature as the air it replaced. C) warmer than the air it replaced. D) much warmer than the air it replaced. E) none of the above
The direction and frequency of hunter-gatherer migration depended on
A) the movement of game and the seasonal growth of plants. B) the shifting of climate patterns. C) the arrival of imperial armies and other invading forces. D) each group's size and the ability to run over long distances. E) mathematical processes.
Which of the following does not occur when progesterone is synthesized from cholesterol?
A) oxidation of an alcohol B) shortening of the aliphatic side chain C) removal of a methyl group D) None, they all occur.
Which of the following locations has a high incidence of fogs caused by relatively warm, maritime air passing over a cold land surface?
A. A B. B C. C D. D