Which of the following did not exert selective pressure that acted in favor of having a large brain in humans?

A. tool use
B. social living
C. language
D. being bipedal


D

Biology & Microbiology

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The bird with the largest wings, also a marine bird, is called the:

a. frigate bird. b. pelican. c. albatross. d. gull. e. cormorant.

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Researchers attempt to explain the persistence of

altruism by the theory of a. self-sacrificing behavior. b. dominance hierarchy. c. social behavior. d. iinclusive fitness e. sexual selection.

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Which biome has the shortest growing season?

a. tundra b. taiga c. grassland d. desert e. tropical rain forest

Biology & Microbiology

Why do many antiviral drugs resemble nucleotides?

a. because they inhibit DNA ligase b. because they are easily obtained c. because they inhibit DNA polymerase d. because they are isolated from plants

Biology & Microbiology