Biomes are the world's major ecological communities, classified by climate and native plants and animals. Some scientists divide the world into hundreds of biomes. Others use groupings of five or six major biomes. Although there is little agreement among
Six terrestrial biomes (rainforests, desert, tundra, grasslands, taiga, and temperate) are covered in depth in these attractive pages from the Missouri Botanical Gardens.
Developed at the Wheeling Jesuit University/NASA Classroom of the Future in West Virginia, Earth Floor: Biomes is a small part of the larger Exploring the Environment site.