Explains that water is necessary to living things, describes the water cycle, and discusses foods that contain water, foods made with water, and the importance of clean water for health.
Examines the links between design in the natural world and design in modern technology through an investigation of the basic principles of water, and includes simple experiments, definitions of key terms, photographs, and diagrams.
Explains why the human body needs water, how much water to drink each day, and how to make sure one gets enough water, and includes a glossary and a list of places to read more.