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Question
The first lower premolar of chimpanzees has ________, the first lower premolar of humans has ________, and Australopithecus afarensis had ________.a. two equal cusps; no cusps; a small and a large cusp
b. one cusp; no cusps; two equal cusps
c. one cusp; two cusps; no cusp
d. one cusp; two cusps; a small and a large cusp
Answer
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