[Free Registration/Login may be required to access all resource tools.] Aquatic biomes can be generally classified based on the amount of salt in the water. Freshwater biomes have less than 1% salt and are typical of ponds and lakes,...

The University of California Museum of Paleontology hosts this site devoted to the study of the earth's biomes, which are the world's major communities, classified according to the predominant vegetation and adaptations of organisms to...