(2004). Biomes, Retrieved from http://www.cotf.edu/ete/modules/msese/earthsysflr/dforestp.html
Paul Przybroski. Temperate Deciduous Forest, Retrieved from http://www.cotf.edu/ete/modules/msese/earthsysflr/dforestp.html
Symbiosis: Ted Talk, Retrieved from http://ed.ted.com/lessons/symbiosis-a-surprising-tale-of-species-cooperation
Paul Przybroski. Temperate Deciduous Forest, Retrieved from http://www.cotf.edu/ete/modules/msese/earthsysflr/dforestp.html
Symbiosis: Ted Talk, Retrieved from http://ed.ted.com/lessons/symbiosis-a-surprising-tale-of-species-cooperation