During an earthquake, the place where the Earth's crust actually moves is the ________ of the earthquake
A) focus
B) epicenter
C) Richter point
D) composite point
E) faultline zone
Answer: A
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A. filling in land in the floodplain to reduce flood volume. B. raising buildings on stilts to elevate floor levels. C. planting vegetation within the stream channel. D. All of the choices are correct.
One of the primary effects of modern communications on social customs has been to
A) preserve folk cultures, by increasing awareness of their uniqueness. B) stimulate the diffusion of folk cultures around the world. C) increase the similarity of social customs in different locations. D) have little effect on the diffusion of social customs. E) slow the rate of change.
Which of the following can undergo keto-enol tautomerism?
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As lava cools and contracts, geometric columnar joints may form
a. True b. False