Reading Metrics
Grade Level
Lower Grades (LG K-3)
Book Level
5.3
Points
0.5
Fiction/Nonfiction
Nonfiction
Word Count
1380
Points per Word
0.000362
Page Count
48
Points per Page
0.010417
Series
True Book
Description
Describes the various parts of the human respiratory system and then explains how that system brings fresh oxygen into the body and carries carbon dioxide to the lungs to be expelled.