Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
9.0
Points
2.0
Fiction/Nonfiction
Nonfiction
Word Count
10418
Points per Word
0.000192
Description
Lungs explores the structure of the lungs and why the respiratory system is a vital part of the human body. It explains the different illnesses that can affect our breathing, from asthma to smoking, and outlines ways to keep our lungs healthly.