Which is not an effect resulting from dam construction on a river?
A) sediment deposition above the dam
B) erosion of the channel bed below the dam
C) increased sediment build-up below the dam
D) bank stabilization below the dam
Answer: C
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Straight scratches on rock surfaces created by glacial abrasion are known as:
a. rock flour. b. glacial striations. c. glacial till. d. varves. e. moraines
In which of the following does carbon dioxide serve as coolant for a graphite-moderated core?
A. gas-cooled reactor B. pressurized-water reactor C. heavy-water reactor D. high-temperature gas-cooled reactor
Most migrants to the United States during the peak of the late nineteenth century came from which parts of Europe?
A) Balkan Peninsula B) Scandinavian Peninsula C) Great Britain D) Italy and Greece E) European Russia
If an area in the upper atmosphere is undergoing convergence, ____ is most likely occurring at Earth's surface below
a. convergence b. divergence c. rain d. a tornado e. fog