http://kids.nceas.ucsb.edu/biomes/
books -deserts
http://www.ducksters.com/science/ecosystems/world_biomes.phpi
http://www.youtube.com/watch?v=NYjezWS08Z8
http://answers.yahoo.com/question/index?qid=20130224183917AAwEhBE
http://www.youtube.com/watch?v=h7v93OIdZuc
http://www.vtaide.com/png/camel-adaptations4.htm
http://biology.blurtit.com/648421/how-is-a-cactus-adapted-to-the-desert