Question

what happens to atmospheric pressure with an increase in altitude.?​

Answer 1

Answer:

As altitude rises, air pressure drops. In other words, if the indicated altitude is high, the air pressure is low

Explanation:

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Answer 2

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As altitude rises, air pressure drops. ... As altitude increases, the amount of gas molecules in the air decreases—the air becomes less dense than air nearer to sea level. This is what meteorologists and mountaineers mean by "thin air." Thin air exerts less pressure than air at a lower altitude.