One of the greatest weather disasters in U.S. history occurred during the ________ , when several years of drought turned grain-growing areas in the center of the nation into the "Dust Bowl."
A. 1950s
B. 1960s
C. 1920s
D. 1930s
E. 1940s
Answer: D
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Why does Marshall Sahlins state that hunter-gatherers are the original affluent society?
a) They eat well, work little, and have lots of leisure time. b) They are rich in terms of meeting their needs. c) Their material wants are easily satisfied because they don’t want much. d) All of the above.
What is a disadvantage of using tidal power?
A) It has high operating costs. B) It requires a large amount of man power. C) It cannot sustain the world's needs. D) It adds pollutants to the air.
What is the highest point of your home state?
Perform a web search to determine the highest point in your state. Then, use the map to determine its elevation in meters.
Many predator-prey relationships do not result in the complete elimination of the prey because
A) predators cannot catch all of the healthy adults and will shift to other prey if one species is scarce. B) the predator population is limited by the availability of territorial space. C) a single species of prey does not provide enough nutrition. D) the prey populations are always far below carrying capacity.