A desert is a place that gets just a bit of rain every year.
Some deserts get almost no rain at all.
A desert can be very hot in daytime and cold at night.
Some deserts are cold all the time.
A desert is a dry area where less than 50 cm of rain falls each year. About one fifth of the Earth's surface is desert.
Deserts can be hot or cold. The Australian desert is one example of a hot desert, and the Gobi desert in Mongolia is an example of a cold desert. Antarctica is the world's largest desert.
The Atacama desert of Chile and the Sahara desert in Africa receive less than 1.5 cm a year, if at all.
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