The run-of-river approach to hydropower often involves ________
A) the purchase of state-run dams by major corporations
B) dams that are reliable but unsustainable
C) impounding water in reservoirs behind concrete dams
D) diversion of a portion of a river's flow through pipes
E) the most expensive type of dams to build and maintain
D
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Wind is actually an indirect form of ____________________ energy
Fill in the blanks with correct word
Clear, sunny days with very cold nights are associated with which of the following types of air masses?
A. cA B. cT C. mP D. mT
British and American English differ in all but which of the following?
A) alphabet B) pronunciation C) spelling D) vocabulary E) prevalent dialects
Surface high pressure zones are usually associated with:
A) stormy weather. B) converging winds. C) clear or nearly clear weather. D) ascending air.