Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
5.4
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
4872
Points per Word
0.000205
Page Count
48
Points per Page
0.020833
Description
This express edition looks at what makes Earth such a special place for life, supporting the theory that life can survive in a much wider range of conditions than people once thought.