If a firm's long-run average cost remains at $4 when output increases, the firm is experiencing ________.
A) economies of scale
B) constant returns to scale
C) diseconomies of scale
D) a shift in its long-run average cost curve
B) constant returns to scale
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All of the following are conservation strategies currently in practice to preserve primates except:
a. use of breeding colonies in captivity b. establishment of primate reserves and geographic sanctuaries c. reintroduction into the wild of primates in captivity d. worldwide mandate to close medical facilities using primates
Olduvai Gorge
a. was discovered in 1992. b. is located in Ethiopia. c. is where Louis and Mary Leakey conducted their search for hominin fossils. d. has NOT produced any hominid fossils. e. has NOT produced any evidence of hominin tools.
_________ is used to measure how old a specimen or deposit is in years
a. Potassium. b. Argon. c. Nitrogen. d. Oxygen.
Which societies tend to show more warmth and affection toward their children?
A) foraging B) pastoral C) horticultural D) market economies