Frequently used Sites
Univ. of California, Berkeley, Museum of Paleontology.Welcome to the World's Biomes Page! Biomes are defined as "the world's major communities, classified according to the predominant vegetation and characterized by adaptations of organisms to that particular environment"; 5 major biomes are explored. http://www.ucmp.berkeley.edu/glossary/gloss5/biome/
Introduction to Biomes. Radford University.
World Biomes.com. Explores 5 main biomes.
Encyclopedia of Earth
Missouri Botanical Garden
NASA Earth Observatory