Natural selection operates on _______, but it is the population that evolves
a. animals
b. environment
c. individuals
d. populations
e. finches
c
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The footprints at Lætoli indicate that
A. very early hominins walked on four legs. B. very early hominins walked on two legs. C. very early hominins hopped on one leg. D. very early hominins used stone tools.
Markus and Kitayama characterize the concept of the __________ self as a primarily Western notion
a. interdependent b. cognitive c. dependent d. independent
Most pastoralists migrate two or more times a year
Indicate whether the statement is true or false
In many Western countries there has been a dramatic increase recently in the percentage of one-parent families. What percent of these one-parent families is female-headed?
a. about 30% b. about 50% c. about 70% d. about 90%