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

Environmental & Atmospheric Sciences

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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.

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Which of the following is an example of modern-day mantle plume volcanism?

What will be an ideal response?

Environmental & Atmospheric Sciences

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

Environmental & Atmospheric Sciences

Which of the following is an erosional feature of glaciers?

A)glacial erratics B)terminal moraines C)drumlins D)cirques E)eskers

Environmental & Atmospheric Sciences