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Subtropical Deserts

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by

Mbongeni Ndlovu

on 29 November 2012

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Transcript of Subtropical Deserts

Important Abiotic Factors Found between 15 and 30 degrees above the equator Hot and dry Mostly sandy with some coarse, rocky areas Little to no rainfall Sporadic Subtropical Deserts Factors Contributing to biome Air from the equator travels towards the tropics As the air travels, it loses moisture and descends on the Tropic
of Cancer and the Tropic of Capricorn As the air descends, adiabatic warming and intense solar radiation from the cloudless skies causes the oppressive hot and dry climate LocatIons North Africa
The Sahara Desert South Africa
The Kalahari Desert North America South America Middle East ClIMate Average temperature during the winter months is around 60 degrees Fahrenheit Average temperature during the summer months is in the mid to upper 90's Daily temperature ranges are dramatic Only receives 2 to 8 inches of rainfall a year
Dew is an important source of moisture PLants and AnImals Spinifex shrub Dromedary Camel
Hump on back stores water Sidewinder Rattlesnake
Is able to glide across the sand by moving in a sideways fashion Desert Palms ProductIVITY Oil
Also provides jobs Solar Energy
Abundance of sunshine Wind Energy
Vast open spaces Threats to the BIome Global warming
Global warming is causing an increase in temperatures, moisture, and carbon dioxide
The changes caused by global warming encourage plant growth
Plant growth will reduce the total area of the world subtropical deserts Depletion of below ground water supply
Water is being used more than it is being replenished
90% of the water is used for irrigation Travel DestInatIons Great Pyramids on the Giza Plateau in Egypt
Most famous man-made structures Great Step Pyramid of Djoser
First pyramid built in Egypt Other InterestIng Facts Between the years 8000 and 3000 BCE, the Sahara desert's climate was cooler and moister
"Green Sahara" Olive trees, oak trees, and oleander plants were prominent Elephants, gazelles, rhinos, and giraffes were able to thrive References Allaby, Michael. “Deserts.” Chelsea House, 2006. Web. 21 Nov. 2012.

“Subtropical Climate Animals.” The Weather Channel Kids, n.d. Web. 21 Nov. 2012.

“Desert.” National Geographic, n.d. Web. 21 Nov. 2012.

Dunn, Jimmy. “Tours of the Pyramids of Egypt.” Tour Egypt, n.d. Web. 21 Nov. 2012. SymbIOSIS Mutualism - a symbiotic relationship in which both species benefit and neither is harmed Parasitism - a symbiotic relationship in which one organism (the parasite) benefits while the other (the host) is harmed Commensalism - a symbiotic relationship in which one species but the other neither benefits nor is harmed
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