All of the following are long-term challenges associated with high-yield marginal farmlands in the U.S. except:
a. loss of topsoil.
b. high cost of fossil fuel.
c. decreasing salinity of soil.
d. silting of irrigation works.
e. high cost of fresh water.
c
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Fossil hominins can be recognized by __________
a. bipedal characteristics and greatly reduced facial prognathism b. increases in the size of the CP3 complex and a U-shaped dental arcade c. bipedal characteristics, reduced canines, reduced CP3 complex size, and changes to palate shape d. increased cranial size, canine size, and bipedal characteristics
Which of the following correctly characterizes the Hopi growing of blue corn?
a. When they farm blue corn, they live their religious understanding of the world. b. They have mixed feelings when they grow blue corn because, though it is necessary to make traditional foods, it is associated with impurity and evil. c. Only women can grow blue corn, because only women possess generative earth powers. d. Hopi look down upon those who grow blue corn, because it represents both poverty and old-fashioned values. e. Hopi spend little time growing corn but much time growing beans, because corn has little religious significance.
Identify three important trends in early hominin evolution, and describe the anatomical changes associated with each.
What will be an ideal response?
Comparatively, the lower classes in the U.S. have NOT done very well in the last three decades because of all of the following EXCEPT:
a. the new post-industrial economy requires increasing amounts of higher education. b. tax cuts during the Reagan and George W. Bush administrations have helped the wealthy more than the poor. c. labor unions have been on the decline. d. rising job opportunities take them away from home. e. the increase in female-headed households.