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- covers about one fifth (20 percent)
of the earth's land area
- very little rainfall and extreme
temperatures
- Some deserts get both very hot
(during the day) and very cold (during the night, when temperatures
can drop well below freezing).
- Some deserts are always cold - Gobi
Desert in Asia, and the desert on the continent of Antarctica.
- The biggest desert is northern Africa's
Sahara Desert; it covers roughly 3,500,000 square miles.
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