The main cause of the Rapid City flood of 1972 was
A. failure of a dam because of a large landslide into the reservoir.
B. intense rainfall from a thunderstorm that resulted in a flash flood.
C. poor design and poor construction of a large concrete dam.
D. rapid melting of glaciers in the Black Hills because of global warming.
E. All of these choices are correct.
Answer: B
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Glacially deposited strata were important in the development of continental drift theory because ____
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Evolutionary development comes as a result of ________
A) geographic location B) extinction C) DNA mutations D) unknown processes E) species migration