At which point or points does the current flow fastest in the center of the channel?





A) A

B) B

C) C

D) D


B) B and D) D

Environmental & Atmospheric Sciences

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How much of the light that reaches Earth's surface is captured by organisms?

a. One part in 2

b. One part in 20 c. One part in 200 d. One part in 2,000 e. One part in 20,000

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What does the dust veil index (DVI) refer to?

a. a way of classifying dust storms b. a way of relating a specific eruption to its impact on climate c. a way of measuring the severity of air pollution d. the rate at which the earth is drying out e. one of the factors considered in global warming studies

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The vapor pressure over ice is greater than the vapor pressure over water

Indicate whether the statement is true or false

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OPEC

A. controls about 40 percent of the world's oil production. B. countries are all in the Middle East. C. consists of Arabic countries. D. All of the statements are correct. 

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