Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
8.2
Points
2.0
Fiction/Nonfiction
Nonfiction
Word Count
11998
Points per Word
0.000167
Page Count
80
Points per Page
0.025
Description
This book describes the atmosphere which makes life on Earth possible, explores its effects on weather and climate, and examines what causes air pollution and what can be done about it.