biological rhythms

Presents a children's book that introduces patterns and cycles of day and night and includes explanatory diagrams, glossary, and index.

Describes the inbuilt mechanism that regulates the rhythms of life in all living things and discusses how these rhythms are set and what happens when they become distorted.

Discusses time and how it can be measured by man-made devices such as sundials and clocks or by the built-in clocks of plants and animals.

Pictures, diagrams, and drawings accompany questions and answers concerning natural history.

Text and illustrations describe how the sun's changing position in the sky throughout the year affects all life on earth.

Describes the activities of a variety of animals from sunset to sunrise.

Explores how the human body repairs and renews itself, looking specifically at the cycles of regrowing hair and nails, breathing, and blood circulation.

A healthcare manual that explains the body's rhythms, growth patterns, and aging processes.