Gourt > Kids and Teens > School Time > Science > The Earth > Biomes > Deserts
In geography, a desert is a landscape form or region that receives little precipitation. Generally deserts are defined as areas that receive an average annual precipitation of less than 250 mm (10 inches).
Deserts have a reputation for supporting very little life. Compared to wetter regions this may be true, although deserts often have high biodiversity, including animals that remain hidden (especially during the daylight) to preserve moisture. About one-fifth of Earth's land surface is desert.
Desert landscapes have certain features. Deserts are often composed of sand and rocky surfaces. Sand dunes called ergs and stony surfaces called Reg or hamada surfaces compose a minority of desert surfaces. Exposures of rocky terrain are typical, and reflect minimal soil development and sparseness of vegetation. Bottom lands may be salt-covered flats. Eolian (wind-driven) processes are major factors in shaping desert landscapes. Cold deserts have similar features but the main form of precipation is snow rather than rain. The largest cold desert is Antarctica (composed of about 98 percent thick continental ice sheet and 2 percent barren rock). The largest hot desert is the Sahara.
More on [ Desert ]
Desertification :: Biodiversity
The Iceland food looks slightly dubious, the deserts, however, quite tasty! Will it be Jeno???
AK4INSURANCE (Andrew Kirby) Fri, 04 Dec 2009 22:10:26 -0000
The Iceland food looks slightly dubious, the deserts, however, quite tasty! Will it be Jeno???
missing him like the deserts miss the rain... *sigh*
MosStephBlog (MosSteph) Fri, 04 Dec 2009 21:51:34 -0000
missing him like the deserts miss the rain... *sigh*
Chinese saying: A dog won't forsake his master because of his poverty; a son never deserts his mother for her homely appearance.
surveyemployees (Mike) Fri, 04 Dec 2009 21:50:54 -0000
Chinese saying: A dog won't forsake his master because of his poverty; a son never deserts his mother for her homely appearance.
#News #World La Banque mobile explore les déserts bancaires http://bit.ly/809ENf (GlobalVoices)
GibertPascal (Pascal Gibert) Fri, 04 Dec 2009 20:49:49 -0000
#News #World La Banque mobile explore les déserts bancaires http://bit.ly/809ENf (GlobalVoices)
And i miss you like the deserts miss the rain
Princesz_S (sarah berzel) Fri, 04 Dec 2009 20:43:11 -0000
And i miss you like the deserts miss the rain
Watching elf and eating deserts with Go peeps!
chanajoy (Anna Steininger) Fri, 04 Dec 2009 20:36:29 -0000
Watching elf and eating deserts with Go peeps!
Arboretums: Thompson Arboretum - A virtual visit to the southwest's oldest desert arboretum. Includes a comprehensive photo tour.
Meta Description: [ The official website of the Boyce Thompson Arboretum. A friend to all desert plants. ]
Chaparral Biome - All about the chaparral biome. Includes description, global position, climate, and information on specific plants and animals of this biome.
Desert Biome - Information on deserts: what they are, where they are located, and the plants and animals which live in them.
Meta Description: [ Answer the question: What's It Like Where You Live? Learn about terrestrial biomes and aquatic ecosystems. Follow link to site about plants. ]
Desert Biomes - All about the desert biome. Includes description, global position, climate, and information on specific plants and animals of this biome.
Deserts - Colorful virtual tour including plant life, animal life, conservation, climate, facts and figures, and quizzes.
Meta Description: [ On Oxfam's Cool Planet web site, On the Line was an educational millennium project involving cultural exchange between United Kingdom and other meridian line countries. A partnership between Oxfam GB, WWF-UK and Channel 4. Deserts home page. ]
DesertUSA - Information and activities about American deserts, plants, animals, environment, geology, people and culture.
Meta Description: [ Lots of links to our many exciting and informative pages about the North American deserts and desert Life in the American Southwest. Includes links to desert plants, animals, people and the geology of the North America deserts. ]
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