Halley's comet has an average orbital period of ________ years.
A. 76
B. about 10,000
C. 10
D. 577
E. about 100,000
Answer: A
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Over the last 200 hundred years, clusters of improved technological innovations seem to have come in waves of industrialization every half-century or so. With each successive wave, the world-system
A) core expanded. B) periphery expanded. C) core and periphery remained unchanged. D) core and periphery both expanded. E) core and periphery both shrank.
Which of the following is an example of modern-day mantle plume volcanism?
What will be an ideal response?
Which of the following is an erosional feature of glaciers?
A)glacial erratics B)terminal moraines C)drumlins D)cirques E)eskers
Which type of breaker has a longer life span and give surfers a longer ride than other breakers?
A) Plunging breaker B) Spilling breaker C) Standing breaker D) Surging breaker E) Swelling breaker