AR Book Level
7.0
AR Points
1
Word Count
7,607
Interest Level
Middle Grades (MG 4-8)
Genre
Nonfiction
AR Quiz #
315273 EN
About this book
A look at the body's circulatory system, heart and blood vessels, and the many roles of the blood. Plus, what makes your pulse race, the way blood cells help to fight disease, illness and injury and how the respiratory system is affected by polluted air.