Which of the following is true about how a stream erodes material?
A. Water cannot erode unless it is carrying sediment.
B. Abrasion is concentrated on the upstream side of obstructions.
C. Turbulence of the water is less important than the temperature, which affects viscosity.
D. Erosion occurs equally on two sides of a bend.
E. All of these choices are correct.
Answer: B
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Which of the following Significant World earthquakes caused no casualties and little impact?
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Indicate whether the statement is true or false