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Wind is air in motion. Wind forms when the sun heats one part of the atmosphere differently than another part. This causes expansion of warmer air, making less pressure where it is warm than where it is cooler.
Deserts form in different ways. Â· Subtropical deserts: formed when air at the equator (called the doldrums) rises and spreads to around. 30 N and 30 S latitudes (called the Horse Latitudes). It dries out as it sinks and becomes dry wind. bringing no moisture and zapping any from the surface.