This book is part of a book series called My Body Systems .

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

There are 24 pages in this book. This book was published 2019 by Capstone Press, Incorporated .

Martha E. H. Rustad is the author of more than one hundred nonfiction children's books, on topics ranging from baby ducks to black holes to ancient Babylon. She lives with her family in Brainerd, Minnesota.