Friedl, Sarah."Symbiotic Relationship: Definition, Examples & Quiz." Education Portal. <http://education-portal.com/academy/lesson/symbiotic-relationship-definition-examples-quiz.html#lesson>.
"What are 3 example of symbiotic relationships in the desert?." Answers. Web <http://www.answers.com/Q/What_are_3_example_of_symbiotic_relationships_in_the_desert>.
"The Namib Desert." Weebly. Web. <http://comeseethenamib.weebly.com/limiting-factors.html>.
"What are 10 Producers in the Desert Biome?" Yahoo! Answers. Web. <https://answers.yahoo.com/question/index?qid=20120529140100AAwoNtb>.
"Density Dependent Limiting Factor." Biology Online. Web. <http://www.biology-online.org/dictionary/Density_dependent_limiting_factor>.
"Name Some Animal Consumers of the Desert.?" Yahoo! Answers. Web. <https://answers.yahoo.com/question/index?qid=20081115143949AArFxgY>.
"Ecology." Wikipedia. Web. <http://en.wikipedia.org/wiki/Ecology>.
GRAPHICS
"Ecology." Wikipedia. Web. <http://en.wikipedia.org/wiki/Ecology>.
cpal.org,web.21 september 2014.
www. geography.learnonthe internet.uk/topic/desert.21 september 2014.
http://desertbiome.blogspot.com/2010/12/predators-of-desert-biome-350309n.html.web.21 september 2014.