Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
6.2
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
7087
Points per Word
0.000141
Page Count
48
Points per Page
0.020833
Description
The goal of all organisms is to stay alive and reproduce within a changing environment. Regulation and behavior help species accomplish this.