biotic communities

Presents a short study of mountains, covering where they are located, plants and wildlife, and more. Includes audio, videos, activities, weblinks, slideshows, transparencies, maps, quizzes, and supplementary resources.

Provides answers to questions about ecosystems, covering where they are located, biodiversity, how they function, food chains, ecotourism, and more. Includes audio, videos, activities, weblinks, slideshows, transparencies, maps, quizzes, and supplementary resources.

Presents a short study of chaparrals, covering where they are located, plants and wildlife, and more. Includes audio, videos, activities, weblinks, slideshows, transparencies, maps, quizzes, and supplementary resources.

Provides overviews of four major biomes of Earth, covering rivers and streams, seashores, tundras, and wetlands, discussing how they were formed, climate, elevation, growing season, plants, animals, food webs, economy, and other related topics, and including sidebars with facts and related information as well as recommended readings, color photographs, illustrations, and maps.

Provides overviews of four major biomes of Earth, covering grasslands, lakes and ponds, oceans, and rain forests, discussing how they were formed, climate, elevation, growing season, plants, animals, food webs, economy, and other related topics, and including sidebars with facts and related information as well as recommended readings, color photographs, illustrations, and maps.

Readers will learn how people affect the biosphere and how life and energy are maintained in the biosphere.

"The ocean holds the largest of Earth's biomes. It covers 70% of the planet's surface. Life in the ocean is diverse. From the smallest creatures that call the ocean home to the largest creature in the ocean, the blue whale."--From cover.

"Grassland biomes are unaltered areas of land where grass is the dominant plant life, as opposed to other terrestrial biomes where trees occupy most of the land surface. They are inhabited by grazing mammals, ground-nesting birds, insects, and a few species of reptiles."--From cover.

"Estuaries and the lands surrounding them are places of transition from land to sea, and from fresh water to salt water. Estuaries are protected from the full force of ocean waves, winds, and storms by the reefs, barrier islands, or fingers of land, mud or sand that define an estuary's seaweed boundary"--From cover.