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Question

Atmospheric pressure _________ with ________ in altitude.

A
decreases, increase
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B
increases, increase
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C
decreases, decrease
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D
remains constant, increase
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Solution

The correct option is A decreases, increase
Atmospheric pressure depends on the number of air molecules. More the number of molecules more is the atmospheric pressure. The atmospheric pressure decreases as the altitude from the sea level increases. This is since the air molecules near the Earth's surface are more in number as the gravitational force of Earth pulls them downward. As we move upwards, the number of air molecules decreases and the resulting atmospheric pressure also decreases.

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