biotic communities

Explains biomes and ecosystems, disucsses the importance of maintaining a healthy diversity among living things and their habitats, and describes ways life is created and sustained.

Offers detailed comparative essays on major biomes and their component ecosystems. Includes entries on land biomes and water biomes and covers climate, elevation, soil, water bodies, vegetation, animal life, food web, etc.

The subzero temperatures and glacial conditions to which the polar regions of the Earth are often subject would make it difficult for many of us to survive there, yet life is present in both the Arctic and Antarctic. Journey alongside some of the early expeditions and will learn about the conditions and life that comprise the polar ecosystems.

Explores the diversity of plant and animal life on Earth and examines each biome, discussing ecological threats and ways they can be protected.

Examines the biomes of the world, and looks at how changes in the climate of the Earth might affect the plants and animals that live in those ecological communities.

Explores the world's fourteen major ecosystems, describing the diversity and interdependence of plant and animal species. Includes foldout panoramas.

Introduces biomes, describing the main kinds and discussing their location, climate, and plant and animal life, as well as those developed by humans.