ecology

Briefly describes mountains, and the plants, animals, and people that live in mountainous areas.

Examines the desert as an ecological niche and describes the plant and animal life supported there.

Examines the arctic tundra as an ecological niche and describes the plant and animal life supported there.

Describes how the plants and animals of a forest interact throughout the year.

Highlights a number of the world's deserts, defines what constitutes a desert, and describes the environment, including some of the plants and animals that live in these arid regions.

Easy-to-read text and illustrations explore the plant and animal life in a pond.

Describes the location, climate, and plant and animal life of the tundras in the Arctic regions.

Presents in text and photographs some of the plants, animals, and people that live in the the tropical rain forest of Costa Rica.

Cumulative text introduces the animals and plants of the Sonoran Desert and their relationship with one another and their environment.

Describes the American prairies, one of the richest ecosystems in the world and an endangered U.S. ecological treasure.