@jyanacabe24 asked 10 months ago.

How little rainfall does a place need to have before it can be classified as a desert?

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@khan answered 9 months ago.

The best way to define a desert is by looking at rainfall. Deserts are defined as areas that receive less than 250 mm of rainfall per year. This is why the Sahara Desert is classified as a desert. It receives less than 250 mm of rainfall per year.

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@clarkee answered 9 months ago.

Based on precipitation alone, hyperarid deserts receive less than 25 mm (1 in) of rainfall a year; they have no annual seasonal cycle of precipitation and experience twelve-month periods with no rainfall at all. Arid deserts receive between 25 and 200 mm (1 and 8 in) in a year and semiarid deserts between 200 and 500 mm (8 and 20 in).

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@johnkeat answered 9 months ago.

The best way to define a desert is by looking at rainfall. Deserts are defined as areas that receive less than 250 mm of rainfall per year. This is why the Sahara Desert is classified as a desert. It receives less than 250 mm of rainfall per year.
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