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It does rain in the deserts but not much. A desert is defined as a region that receives less than 10 inches (250 mm) of precipitation on average per year. Some deserts receive virtually no rainfall. Most deserts are caused by mountains that block moist air from crossing over. There are called rain shadow deserts.

It does rain in the deserts but not much. A desert is defined as a region that receives less than 10 inches (250 mm) of precipitation on average per year. Some deserts receive virtually no rainfall. Most deserts are caused by mountains that block moist air from crossing over. There are called rain shadow deserts.

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10y ago

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