Deserts
Published on Nov 27, 2015
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PRESENTATION OUTLINE
DESERTS
- Deserts cover about one fifth of the Earth's surface and occur where rainfall is less than 50 cm/year.
- There are relatively few large mammals in deserts because most are not capable of storing sufficient water and withstanding the heat.
Photo by Dennis Larson
DESERTS
- Deserts often provide little shelter from the sun for large animals
- The dominant animals of warm deserts are nonmammalian vertebrates, such as reptiles
Photo by Rennett Stowe
DESERTS
- Although the daytime temperatures of the desert biome are very hot, they can get very cold at night.
- The Sahara Desert is the largest desert in the desert biome. It covers over 300 million square miles.
Photo by sandy.redding
DESERTS
- Many desert animals tend to be nocturnal, sleeping during the day and coming out at night when the temperatures are more tolerable.
- Because there is hardly any standing water in the desert biome, animals either store water in their bodies or get their water needs met by the foods they eat.
Photo by Nataraj Metz
DESERTS
- The elf owl will sometimes live inside a cactus during the day and then come out at night to hunt.
Photo by Miroslav Zdrale
