Most spillways below dams are designed to withstand the
A. 1,000-year flood.
B. 100,000-year flood.
C. 10,000-year flood.
D. 100-year flood.
Answer: A
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Indicate whether the statement is true or false
The crisis in controlling bedbugs has encountered difficulties because
A) bedbugs are vectors for serious human diseases and require powerful chemical pesticides. B) home applications of effective pesticides can endanger children. C) the only way to get any control is to burn infested bedding. D) bedbugs are internal parasites that require long doses of antibiotics to eliminate.
Why was the earthquake that struck Haiti in 2010 so much more deadly than the earthquake that struck Tohoku, Japan, in 2011?
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