Two groups of animals share a portion of the same habitat. These animal groups look similar to one another, but do not interbreed. Using the biological species concept, these animal groups would be considered _________
a. overlapping species
b. hybrid species
c. separate species
d. one species
Correct Answer: c
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The first metal used in West Africa was
A. copper. B. bronze. C. iron. D. tin.
Which of the following statements about reproduction and care of offspring among primates is incorrect? a. Reduction in the number of offspring among primates is an adaptation to an arboreal existence. b. No primates give birth to more than one offspring at a time. c. The more closely related a primate species is to humans, the more helpless and immature the newbornoffspring tend to be
d. Play provides primates with a way to explore and learn their environments. e. There is a relatively long birth interval between offspring, especially in apes.
Footprints preserved in 3.6 million-year-old volcanic ash at Laetoli, Tanzania, indicate that
A. some of our early ancestors may have worn crude sandals. B. A. africanus was on his/her way out of Africa. C. A. boisei and A. africanus both lived about 3.6 million years ago. D. A. afarensis was quadripedal. E. bipedalism definitely preceded marked brain expansion in human evolution.
What is the mit'a system? Do you think this system had antecedents in earlier South American politics?
What will be an ideal response?