The cooling period at the end of the Pliocene likely prompted an adaptation for bigger bodies and shorter limbs. With what rules of body variation does this change conform?
A) Bergmann’s and Allen’s
B) Darwin’s and Wallace’s
C) Cartmill’s and Sussman’s
D) Gloger’s and Rensch’s
A) Bergmann’s and Allen’s
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What is plate tectonics? In what ways do the movements of land masses affect the evolution of life?
What will be an ideal response?
If a monopolistically competitive firm is producing 700 units of output and the marginal revenue from producing the 700th unit of output is $5 and the marginal cost is $5.50, which of the following is true?
A) The firm should decrease production to maximize profit. B) The firm should increase production to maximize profit. C) The firm is maximizing profit. D) The difference between marginal revenue and marginal cost (MR - MC) at the 1,200th unit is zero.
Among which societies did slaves traditionally live lives very similar to those of their masters, living in the same houses and eating the same food?
a. West African societies b. Native Americans of the Pacific northwest c. the U.S. south d. The Caribbean and South America
A Hindu person’s caste status in India is:
a) inherited at birth. b) of little importance these days. c) linked to one of three castes. d) necessary to determine occupation.