Glossary
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Desert
An area too dry to support a continuous cover of trees or grass. A desert generally receives less than 10 inches (25 cm) of precipitation per year.
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Desert shrub vegetation
Scant, bushy plant life occurring in deserts of the middle and low latitudes where there is not enough rain for trees or grasslands.
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Desertification
An expansion of dry conditions to moist areas that are next to deserts.