The surface pressures at the bases of warm and cold columns of air are equal. Which of the following statements describes what is occurring?

A. Pressure decreases with increasing height at the same rate in both columns.
B. The cold air is lighter than the warm air.
C. The columns of air contain a different total number of air molecules.
D. The weight of each column of air is the same.


Answer: A

Environmental & Atmospheric Sciences

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