• Arid region with sparse to almost nonexistent
plant life
• Usually gets less than 25 cm of precipitation
annually
• Vegetation varies greatly
• Deserts have dry climates
• Are formed by high pressure zones, cold air
descends then descending air becomes warm
• Instead of releasing rain heat from the ground
evaporates the water before it can come down
as rain in result they have very arid climates
• Driest deserts are drifting sand dunes they produce
plants such as creosote bush
• Creosote bushes adapt to variouse climates
• Cacti has leaves reduced to spines, photosynthetic
stems and a thick waxy coating
• Some leaves of desert plants curl up or even drop off to
reduce water loss in dry spells
• Areas that recive more rain fall have shrub cummunity
that include drought resistant trees
• Areas with less rain fall have scatterd plant life and has
large bare areas
• Diamond black rattle snake they are major
predators
• Desert tortures feed on plant life
• Many desert animals are small herbavors
• Many deserts have
- Armadillo lizards
- Bobcats
- Scorpians
- Snakes
Human impact
• one of the biggest threats to deserts is
developments Before the widespread introduction of air
conditioning in the latter part of the 20th century, few
people would think to voluntarily live in a desert
• Global warming is also a potential threat; it's hard to
imagine that a slightly warmer desert would be any
worse than some of the hot deserts now. However, even
small changes in temperature or precipitation may have
extensive impacts on desert communities. In some
cases, global warming is predicted to increase the area of
deserts, but it is not clear if desert plants and animals
will be able to take advantage of this. Also, it should be
noted that human activities such as fire wood gatering
and grazing are converting fragile grasslands into deserts,
a process called desertification
• Off road driving also hurts the desert
Commercial value of biome
• In a desert you can find copper, aloe vera,
uranium, mineral zinc, and rocks.
• All of these things are harvested and obtained
in different ways
• aloe vera is harvested from the leaves of the
aloe plant, where as uraniu, and copper can
be found in various rocks above and below the
ground
Bibliography
• http://www.marietta.edu/~biol/biomes/desert.htm
• http://wiki.answers.com/Q/How_do_peo
• ple_obtain_these_valuable_resources_found_in_the_deser
t
• http://www.bugbog.com/gallery/namibia_pictures/namib_
desert_pictures.html
• http://ed101.bu.edu/StudentDoc/current/ED101fa10/alapa
117/Images/desert_location_map001.gif
• http://farm1.static.flickr.com/37/104131522_8348d36b59.j
pg
• http://www.us-parks.com/images/death-valley-nationalpark/desert-plants-of-death-valley-p-1489-m.jpg
• http://www.macwallpapers.eu/wallpaper/Desert-snakesWildlife-Animals-Desktop/