Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
6.5
Points
0.5
Fiction/Nonfiction
Nonfiction
Word Count
2643
Points per Word
0.000189
Page Count
40
Points per Page
0.0125
Series
Mission: Science
Description
This book discusses the discovery of organisms, including germs, and how it helped scientists discover ways to keep people healthier.