Everyone needs the things Earth can give us - such as air, water, shelter, food and energy. But we must learn to use these carefully, without harming the world around us. Our Earth is in danger - and we must make it safe for the future.

Most of the world's fresh water comes from rivers. We need fresh water every day. This book looks at the various uses of rivers and how to keep them clean and healthy.

This is volume 2 in Earth in Danger .

There are 32 pages in this book. This book was published 2005 by Hachette Children's Group .

Polly Goodman is an experienced writer and editor of children's information books. She worked in education for over seven years.