Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
8.4
Points
2.0
Fiction/Nonfiction
Nonfiction
Word Count
10900
Points per Word
0.000183
Page Count
64
Points per Page
0.03125
Series
Kingfisher Knowledge
Description
This book examines how some organisms help us fight diseases and others help to produce food. But bacteria can also be harmful, causing tooth decay, food poisoning, and many deadly epidemics.