Allen, Kathy

An introduction to wind power.

Describes the sea turtle and its disappearing habitat.

Describes the cause and effect of deformed frogs in the wild and discusses how people are working to protect frogs.

Describes the anatomy of the human head, including organs, muscles, and the skull.

Simple text and photographs introduce the U.S. Constitution, its history, and significance.

"Describes the life cycle and characteristics of polar bears, including physical and environmental threats to the species"--Provided by publisher.

Photographs and text describes the hieroglyphic writing system of ancient Egypt.

An introduction to migration, explaining why animals change climates, how they know when to leave and where they are going, and how people influence it.