Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
4.6
Points
0.5
Fiction/Nonfiction
Nonfiction
Word Count
2340
Points per Word
0.000214
Page Count
32
Points per Page
0.015625
Series
Human Body (Child's World)
Description
This book explains what comprises the respiratory system and how it does its job.