Dark skin is advantageous in the tropics because it
a. protects from frostbite.
b. protects from overexposure to ultraviolet radiation.
c. helps prevent rickets.
d. promotes vitamin D synthesis.
e. increases the skin's exposure to ultraviolet radiation.
b
You might also like to view...
Political power in horticultural society is mostly associated with:
a. kinship. b. status. c. prestige. d. gender.
In pastoralist societies, animals and humans compete for the same natural resources
Indicate whether the statement is true or false
Archaeologists have tried to replicate, through trial and error with flintknapping, the way in which Folsom points were fluted. This research is an example of experimental archaeology
Indicate whether the statement is true or false
The __________ system gives separate kin terms to all kin relationships
a. Omaha b. Sudanese c. Hawaiian d. Crow