Gases in the atmosphere vary in their ability to absorb shortwave and longwave radiation. Which of the following contributes the most to heating of a clear (cloud free) sky?

A) water vapor
B) ozone
C) carbon dioxide
D) oxygen
E) hydrogen


Answer: A

Environmental & Atmospheric Sciences

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Was Carter Lake cut off before or after the state boundary between Nebraska and Iowa was drawn?

A. Before B. After

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The boundaries between sedimentary rocks that represent separate depositional events are called ____

a. foliations b. regoliths c. outcrops d. rock cycles e. bedding planes

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Unconformities represent significant events in geologic history.

a. true b. false

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The density of 4°C water will slightly decrease when it is

A. warmed. B. cooled. C. both of these D. none of the above

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