Asia and the North American continent have been connected by a land bridge at various times during the past. When was the Bering land bridge most recently exposed? Did this coincide with a warm or cool climatic period?
What will be an ideal response?
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In the Af climates, ____
a. only winter months receive more than 2.4 inches of precipitation b. only summer months receive more than 2.4 inches of precipitation c. all months receive more than 2.4 inches of precipitation d. total annual rainfall must exceed 71.6 inches
The diagram below shows a simple cross section through an aquifer in a small rural community. Which of the three wells shown is likely an artesian well?
A. Well A B. Well B C. Well C
The shoreline represents:
a. the general region of interaction between land and the ocean or lake. b. the average position of the water line. c. sea level. d. the average position of high tide. e. the exact, constantly changing contact between dry land and the standing water body.
The first permanent settlements may have been a place for
A) nomads to bury and honor their dead. B) political leaders. C) business services. D) grain repositories. E) domesticating animals.