Describes swamps, marshes, and bogs, places which are almost always wet and soggy and which are habitats for hundreds of kinds of plants and animals.

Explores the rugged and lonely wilderness of frozen lands and icy seas which sweep around the top of the earth and which are rich with wildlife and scenery.

Describes the physical features of a coral reef, its community of plants and animals, and environmental threats.

Describes the world's vast expanses of grassland, how they developed, and the plants and animals that live there.

Describes the prairie of central North America including the grasses, other plants, birds, mammals, and life underground.

Describes aquatic biomes, focusing on life in rivers and streams, and explains the effect of pollution on these biotic communities and on the lives of people everywhere.