Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
6.7
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
3141
Points per Word
0.000318
Page Count
32
Points per Page
0.03125
Description
This introduction to carbon-oxygen and nitrogen cycles explains how these elements are constantly being used and recycled in the environment.