A(n) apron of fallen rock fragments called ________ is generally found at the base of a slope affected by rockfall.
A. grus
B. talus
C. loess
D. fluvial
E. alluvial
Answer: B
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The opportunity to lobby elected representatives is an important right for everyone in a democracy.
Answer the following statement true (T) or false (F)
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This mechanism of evolution is known as A) natural selection. B) mutation pressure. C) genetic drift. D) gene flow.
Which of the following is NOT true of calderas?
A. They form from the collapse of the ground surface into an emptied magma chamber below. B. They are bounded by steep topographic scarps with a generally basin-shaped outline. C. They are produced by removal of easily eroded pyroclastic materials. D. They commonly contain layers of volcanic ash and volcanic domes.