Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
7.5
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
7388
Points per Word
0.000135
Page Count
64
Points per Page
0.015625
Series
Our Endangered Planet
Description
This book explains the dangers posed by the two main air problems of pollution and acid rain. The coauthor is Mary M. Rodgers.