Prentice Hall World of nature

Examines the cycles and systems within the environment, basic principles of ecology, and pollution of the environment.

Examines what prehistoric animals looked like, why dinosaurs and others creatures became extinct, and how animals evolved.

An illustrated natural history guide for young readers discussing how animals' heart, blood, brain, muscles, and bones function, how animals work, and animal senses.

An introduction to animals and their habitats, both past and present.