physiological aspects

Explains what the chemical element magnesium is, and its importance to humans.

Defines trace elements and discusses how they affect life on the planet.

Explains what the chemical element chlorine is, and discusses its importance to humans.

Describes the chemical make-up of sulfur, where it is found, and its uses; also includes a periodic table, a glossary, and a bibliography.

Notes the importance of potassium to life and industry.

Notes the importance of phosphorus to plants and animals.

Describes what happens to the human body while running a race and provides tips for technique in such areas as warming up, breathing, and recovering from the race.

Describes how the parts of the body work together to produce speech.

Explains what Sudden Infant Death Syndrome is, how to reduce its risk, the controversies surrounding different explanations for the disease, and personal experiences with it.

"Explains the mechanics behind physical movement in all of the major muscle and joint groups, and recommends strengthening and stretching exercises to help avoid injury"--Provided by publisher.