What has led to a sharp drop in the number of farms in the United States?
a. Intense capital investment and competition
b. Increased unemployment
c. Industrial agriculture
d. Increased competition
Answer: a
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Rites of purification exist to counteract taboo
a. True b. False Indicate whether the statement is true or false
Features that are homologous are similar due to __________
a. convergent evolution b. parallel evolution c. similar patterns of use d. a shared evolutionary history
The grandmother hypothesis states that the presence of postmenopausal females in human groups:
A. is unfavorable to the survival of the rest of the group B. only became possible after the development of agriculture C. increases the survival rate of children D. all of these
________ is NOT one of the primary mechanisms of genetic evolution
A. Gene flow B. Natural selection C. Independent assortment D. Mutation E. Genetic drift