Johnson, Rebecca L

Photographs, illustrations, and diagrams describe how the body's cells form the immune system designed to defend it against infection and disease.

Presents a children's book on how the digestive system works, how nutrients fix damaged cells, and how the stomach helps in digestion.

Presents the various types of defenses mechanisms used by animals, including the bone spikes of the African hairy frog, the deadly poison of the blue-spotted N. taracua termite, and the hammer-like punch of the peacock mantis shrimp.

Describes the climate, soil, plants, and animals of North American deserts and the ways in which the plants and animals depend on each other and their environment to survive.