In the late spring and summer of 1993, the Upper Mississippi River Basin experienced record high floods. However, the floodwater mass did not significantly affect the Lower Mississippi River Basin because ________.
A. there was a drought in Louisiana
B. the input from the Ohio River flow was low
C. the Southern levees were built higher during the summer before the water got there
D. All of these choices are correct.
E. None of these choices are correct.
Answer: B
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The polar front theory is remarkable because
A) it demonstrated the value of high-powered computers. B) it fully explained the formation, growth, and dissipation of tropical cyclones. C) the developers had to invent new mathematical methods in order to describe it. D) it was developed with far less observational data than we have today.
________ is the study of minerals
A) Paleontology B) Mineralogy C) Petrology D) Tenacity
Continental polar air masses are
A) very cold. B) humid. C) unstable. D) stationary. E) all of the above
Data presented as an average on a pre-existing areal unit (average income by zip code, for example) is presented as a(n) ________.
A. dot distribution map B. graduated circle map C. isopleth map D. choropleth map