How do hydrologists measure the severity of floods?
A. the number of people that are impacted along a floodplain
B. the amount of land area that is inundated along a floodplain
C. the amount of land area that collects water from a rain event
D. how fast the water rises in the channel
E. the height (stage) above which a stream overflows its banks
Answer: E
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When people who speak a given language migrate to a different location and become isolated from other members of their group,
A) their language usually shows very little change even over a long period of time. B) they immediately develop a literary tradition. C) various dialects may develop. D) they lose their linguistic abilities. E) subgroups form multiple languages.
In the wetter regions of humid continental, hot summer climates, grasslands are the natural vegetation
a. True b. False Indicate whether the statement is true or false
Which chemical class includes ethanol (a type of alcohol)?
A. teratogens B. mutagens C. carcinogens D. neurotoxins
Temperatures in Earth's atmospheric layers vary in a zig-zag pattern with altitude principally because
A) the chemical composition of the atmosphere varies. B) air is compressible. C) the density of air varies with altitude. D) pressure varies with altitude.