Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
7.4
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
7761
Points per Word
0.000129
Page Count
72
Points per Page
0.013889
Series
Our Endangered Planet
Description
This book describes how atmospheric gases work, how we have changed them, and what is being done to address the problem. The coauthor is Mary M. Rodgers.