If you traveled back in time and met a living hominin, which clues might tell you that your new friend was in the genus Australopithecus and not Homo?
A) The hominin was bipedal.
B) You were in Africa.
C) The hominin had a relatively large brain.
D) You had traveled 3.5 million years into the past.
D
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The most amount of energy is available to
a. A. b. B. c. C. d. D. e. E.
A circulatory system in which the heart pumps blood to tissues throughout the body cavity is
A. a closed circulatory system. B. a gastrovascular cavity. C. an incomplete circulatory system. D. a complete circulatory system. E. an open circulatory system.
How many sex chromosomes does the normal human male inherit from his father?
A) 0 B) 1 C) 2 D) 22 E) 23
Which of the following is true regarding tamarisk beetles?
a. They are damaging people's homes. b. They are moving through Arizona more quickly than predicted. c. They eat only tamarisk leaves. d. They are native to South America.