This book is part of a book series called Reading Expeditions-Everyday Science .

This book has been graded for interest at 8-12 years.

There are 24 pages in this book. This book was published 2006 by National Geographic Society .

Catherine Hughes, M. Ed. , is the Executive Editor, Preschool Content, at National Geographic. She is the author of several books in the NG Little Kids First Big Book series.