The subtropics at 30° north and south of the equator are characterized by arid lands. This is primarily a result of:

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Quizplus · Accepted Answer

Descending, dry air that is part of a cell that originates at the equator, known as the Hadley cell, is responsible for the arid conditions found in the subtropics at 30° north and south of the equator. This air loses its moisture as it rises at the equator and then descends dry, creating arid conditions.

The Subtropics at 30° North and South of the Equator