If you were digging at Olduvai Gorge, where would you expect to find Oldowan tool assemblages?
A) scattered throughout the middle layers
B) in the lowest, oldest layers
C) only on the northern ridge of the gorge
D) jumbled on the surface layer of the gorge
B) in the lowest, oldest layers
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The enlargement of the right heart ventricle among Quechua Indians is a developmental adaptation to:
a. cold weather b. high altitude c. poor nutrition d. farming
Although the nuclear family remains a cultural ideal for many Americans, nuclear families accounted for barely 20 percent of American households in 2015. In fact, other domestic arrangements outnumber the traditional U.S. household five to one. All of the following are among the reasons for this trend EXCEPT that
A. women are increasingly joining men in the workforce. B. job demands compete with romantic attachments. C. divorce rates have risen. D. it is increasingly economically feasible for women to delay marriage and yet live away from their family of orientation. E. contrary to expectations, the importance of kinship is growing in contemporary nations.
Radiometric dating techniques
a. are not based on the phenomenon of radioactive isotope decay rates b. can be used to determine the absolute age of organic materials c. include the K/Ar but not carbon-14 methods d. are a form of stratigraphy e. are relative dating techniques
Which of the following statements about imperialism is true?
a. It relies solely upon conquest through military means for territorial expansion. b. It is the result of the use of all forces that contribute to the construction and maintenance of transcolonial empires. c. It implies that only colonial politics were observed, since the imperial centers were too distant. d. It relies solely upon commercial strategies as a means for territorial expansion.