Most deserts occur at approximately 30° latitudes. Which of the following statements BEST reflects this finding?
Trade winds pull all moisture away from land and to the ocean at 30° latitude.
Warm dry air descends at 30° latitude.
Cool dry air descends at 30° latitude.
Westerlies pull all moisture away from land and to the ocean at 30° latitude.

Respuesta :

As most deserts occur at approximately 30° latitudes, the best statement that reflects this finding is cool dry air descends at 30° latitude.

A desert refers to a barren area of landscape which is characterized by little precipitation and, consequently, living conditions are hostile for plant and animal life. Deserts cover over one-fifth of the Earth's land area, and they are found on every continent. It is a place that receives less than 10 inches (25 centimeters) of rain per year and belongs to a wider class of regions called drylands. Most deserts are found along the 30-degree latitude line due to the pattern of cold-water currents, which force cool dry air over the land at 30°.

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