Reading Metrics
Grade Level
Lower Grades (LG K-3)
Book Level
3.6
Points
0.5
Fiction/Nonfiction
Nonfiction
Word Count
837
Points per Word
0.000597
Page Count
20
Points per Page
0.025
Series
Discovery Links Fluent Plus
Description
Whether they have lungs, gills, or spiracles, all animals breathe oxygen. This book looks at how different animals have different ways of breathing.