At about 30° north and south of the equator there are dry regions on Earth. Why does this occur?
A) Warm air rises and evaporates, leaving dry, cool air.
B) Cool air falls, is warmed, and absorbs moisture.
C) Warm air falls and absorbs moisture.
D) Cool air rises, and water condenses.
E) Air flows laterally across the land from the temperate zone.

Question

Quizplus · Accepted Answer

Cool air falls, is warmed, and absorbs moisture. This process is part of the Hadley cell circulation, where air rises at the equator, cools and loses its moisture, then moves towards the poles, sinks at about 30° north and south, and warms up, absorbing moisture and creating dry conditions.

At About 30° North and South of the Equator There