This book is part of a book series called Scholastic Science Readers-Level 2 .

This book has been graded for interest at 7-8 years.

This book was published 2001 by Perfection Learning .

Carolyn Otto is the author of more than twenty books, including several award-winning children's non-fiction titles. She has also written poetry and fiction for children and adults. She earned her master's degree from New York University. She now lives in Colorado Springs, CO.