Exploring Terrestrial Biomes: http://www.cotf.edu/ete/modules/msese/earthsysflr/biomes.html
Science Spot Ecology and Environment: http://sciencespot.net/Pages/kdzbionature.html
The World's Biomes http://www.ucmp.berkeley.edu/glossary/gloss5/biome/
Biome Games: http://kids.nceas.ucsb.edu/biomes/