Which is true?

A) Avg sea level air pressure is 29.92mb or 1013.25 in

B) Air pressure decreases, temp decreases, wind increases with increasing altitude

C) Oxygen concentration and water vapor decreases with increasing altitude and a

D) Avg sea level air pressure is 1013.25mb and 29.92in and b

E) With increasing altitude air expands, cools and becomes drier

In the given statements, all the statements are correct except option A.

Option: B, C, D and E

Explanation:

The concentration of air molecules and pressure of it on the earth surface is called as air pressure. The average air pressure at sea level is 1013.25mb.Altitude, temperature has a very significant relationship with air pressure. When temperature increases air pressure decreases and when temperature decreases air pressure increases.

Like with increasing altitude air pressure decreases. As in maximum height the concentration of air molecules become light and it reduces the pressure in the atmosphere. Oxygen concentration and water vapour also decreases with increasing altitude.

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