In "Reciprocity and the Power of Giving," Cronk, citing work by sociologist Warren Hagstrom, argues that __________ represent gifts in a system of reciprocal exchange
a. citations in academic articles
b. business lunches
c. alcoholic drinks
d. blankets, coppers, and arm shells
Correct Answer: a
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All of the following are evolutionary forces except:
a. genetic drift b. gene flow c. genetic cloning d. mutation
The masseter, temporalis, medial and lateral pterygoid muscles as a group are called the muscles of mastication
a. True b. False
The evolution of primate intelligence may be based on:
A. the difficulties imposed by living in a social group B. the challenge of exploiting fruit as a resource C. the association of intelligence with language ability D. the difficulties imposed by living in a social group and the challenge of exploiting fruit as a resource E. all of these
The ___________ skull generally was long, low, and thickly walled
a. Homo habilis b. Homo erectus c. Homo rudolfensis d. Homo heidelbergensis