Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
9.1
Points
2.0
Fiction/Nonfiction
Nonfiction
Word Count
9295
Points per Word
0.000215
Description
This book explores the structure of the immune system and how it fights off invasion from attacking infections. It explains different illnesses and conditions, from allergic reactions to chronic fatigue syndrome, and outlines how to keep us healthy.