This book is part of a book series called Core Concepts .

This book has been graded for interest at 12-17 years.

There are 96 pages in this book. This book was published 2014 by Rosen Classroom .

Krista West writes chemistry, biology, and Earth science books for young adults from her home in Fairbanks, Alaska. She holds a B. S. in zoology from the University of Washington and master's degrees in Earth science and journalism from Columbia University.