Variations in human skin color ______.
A. balance the dangers of exposure to sunlight with the need for vitamin D
B. have no relationship to climate or geography
C. are inversely related to the concentration of melanin: the greater the melanin, the lighter the skin
D. are related to the distance of the equators: the closer to the equator, the lighter the skin color
Answer: A
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For the Indians, cultural diffusion usually meant __________
A) less self-sufficiency B) greater self-sufficiency C) assimilation D) annihilation
URL and web address are synonyms
a. True b. False Indicate whether the statement is true or false
Marriage is:
a. cyclical. b. an endless syndrome. c. a set of processes. d. static.
Santiago works as a police officer and has noticed the high correlation between drinking and arrests for serious crimes. What may be the most likely reason for this correlation?
a. Alcohol, by increasing inhibitions, may encourage people to turn to crime. b. Chronic alcoholics are bored with their jobs and may turn to crime for excitement. c. Heavy drinking causes men to have increased testosterone, which contributes to criminal behavior. d. The values and self-image of chronic heavy drinkers tend to change as their condition worsens, and they are more likely to associate with criminals or delinquents.