All of the following are examples of perfectly competitive markets except which one?
A) the market for yellow onions
B) the market for sunglasses
C) the market for red peppers
D) the market for cotton
B) the market for sunglasses
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The adoption of agriculture in Europe was due in part to the __________
A. introduction of barley from southwestern Asia B. independent domestication of sheep and goats C. cultivation of corn by late Mesolithic populations D. independent domestication of rice and millet
Trade relations that led to the settlement of formerly nomadic peoples near trading posts were most common in __________
a. Spanish California b. New England c. the Gulf Coast d. the Arctic and Canada
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.
Some modern human populations adapted in just a couple thousand years to living at high altitudes, this is a clear example of:
a. microevolution b. macroevolution c. ancient synthesis d. punctuated equilibrium e. sexual dimorphism