Sources

http://www.vtaide.com/png/desertBiomes.htm

http://www.ucmp.berkeley.edu/exhibits/biomes/deserts.php

http://www.blueplanetbiomes.org/desert.htm

http://www.mbgnet.net/pfg/diverse/biomes/desert/

http://www.idiotica.com/cranium/encyclopedia/content/desert.htm

http://www.desertanimals.net/

http://ths.sps.lane.edu/biomes/desert4/desert4.html

http://www.sciencedaily.com/releases/2011/12/111218221321.htm

http://www.snap.uaf.edu/attachments/Cliomes-FINAL.pdf