respiration

Offers answers to questions about how dolphins swim and breathe.

Simple text and photographs describe the theories about why people yawn.

Readers learn about the human body and what causes us to cough.

Presents a guide to keeping your lungs healthy by following important guidelines, such as avoiding drugs and pollutants, and getting regular exercise. Features color photographs, accessible text, a glossary, further resources, and an index.

Describes the structure and function of the human respiratory system, its role in supporting other body systems, and how to keep it healthy.

A scientific, historical, environmental, and cultural portrait of air, which discusses such topics as air's origins, the biology of human breathing, pollution, poison gas, and the religious significance of breath.

Contains six simple science experiments with easy-to-follow instructions designed to teach children about respiration.

Explains the respiration and circulation systems of the body with related facts and statistics.

Provides comprehensive information on the role gas plays in the body science of humans and animals.

Explains in text and illustrations how plants and animals, from the simple one-celled organisms to the complex mammals, "breathe.".