This book is part of the "Lift Off!" series for young readers which have been developed and written to be used as part of the National Curriculum. The books are designed to develop understanding and to stimulate the enquiring mind - with each book investigating and explaining an aspect of the world in which we live. This book on the water cycle discusses where water came from, how the seas are filled, how water gets into our homes and water conservation. Other books in this series include "The Weather" and "Up in the Sky".