This book is part of a book series called Amazing Human Body .

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

There are 79 pages in this book. This book was published 2010 by Cavendish Square Publishing .

Kristi Lew is a former high school science teacher with degrees in biochemistry and genetics. After years in the classroom and cytogenetics laboratories, she is now the owner of a professional K-12 educational writing service that specializes in writing nonfiction science books for students and teachers.