A horticultural system of cultivation is characterized by
A. lack of proper knowledge about plant domestication.
B. intensive use of land and human labor.
C. the use of irrigation and terracing.
D. developing almost exclusively in arid areas.
E. periodic cycles of cultivation and fallowing.
Answer: E
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Which of the following does NOT characterize race in the United States?
A) It is flexible and achieved as a class category. B) It is characterized by a binary division. C) It interacts with class and ethnicity as a way of marking social stratification. D) It affects employment and educational opportunities. E) It is highly correlated with unequal access to health care and unequal health care outcomes.
James McKenna's research on brain-wave patterns of mothers and infants shows that co-sleeping is not the best practice for families
a. True b. False Indicate whether the statement is true or false
The best-represented Australopithecus in the fossil record is A. afarensis
Indicate whether the statement is true or false
Exogamy is adaptive because it
A. increases the likelihood that disadvantageous alleles will find phenotypic expression and eliminate them from the population. B. was an important causal factor in the origin of the state. C. impedes peaceful relations among social groups and therefore promotes population expansion. D. reduces the gene pool of a community. E. increases the number of individuals that one can rely upon in times of need.