Multiple Choice
Hydrostatic equilibrium occurs when:
A) the force of gravity and the vertical pressure gradient both act to push air upward.
B) the force of gravity and the vertical pressure gradient both act to push air downward.
C) the force of gravity and the vertical pressure gradient have equal value and oppose each other.
D) large air masses are moving either up or down.
Correct Answer:

Verified
Correct Answer:
Verified
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