This book is part of a book series called Body Focus-The Science Of Health, Injury And Disease .

This book has been graded for interest at 11-14 years.

There are 48 pages in this book. This book was published 2009 by Heinemann Educational Books .

Author Adam Miller has many years of experience writing and editing nonfiction books for young people. He enjoys writing on many topics, especially history, music, and food. When he's not busy writing or editing, Adam enjoys cooking, traveling, and hunting down hard to find records. He lives and writes from his home in Chicago, Illinois. Dr Carol Ballard worked for many years as a school science co-ordinator. She is now a full-time writer of information books for children and teenagers.