Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
7.1
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
5273
Points per Word
0.00019
Page Count
32
Points per Page
0.03125
Series
Your Body and Health
Description
This book explains how the respiratory organs work, how oxygen is circulated through the bloodstream and waste is exhaled, and some common breathing difficulties.