Directional selection has eliminated sickle-cell anemia from all human populations, except those in regions where diabetes is endemic.
Answer the following statement true (T) or false (F)
False
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In parts of Melanesia, pigs can be purchased using strings of shells, which cannot be used to buy any other goods or services. This is an example of __________.
A) special-purpose money B) general-purpose money C) bartered commodities D) peasant money
Compared with other primates, the human dependency period is much ________
a. longer b. shorter c. about the same d. Humans have no dependency period.
The practice of sororal polygyny tends to maximize stress and competition within the family
a. True b. False
If the cost of capital is $15 per hour, the wage paid to employees is $25 per hour, the marginal product of capital is 90 units per hour, and the marginal product of labor is 100 units per hour, to minimize its costs, the firm should ________.
A) decrease the amount of labor and capital used B) increase the amount of labor used and decrease the amount of capital used C) decrease the amount of labor used and increase the amount of capital used D) not change the amount of labor or capital