"Biomes can be broken down into levels of organization. These levels range from a single plant or animal to many species of plants and animals living together in an area. Find out more in the Biomes of the World series"--.
An introduction to the tundra, Earth's coldest and most fragile biome, looking at the living and nonliving environment of the tundra, discussing the effects of the human presence, and considering the future of the tundra.
An introduction to coniferous forests, looking at the living and nonliving environment of the coniferous forests, discussing global warming and its effects, and considering the future of the forest.
