AR Book Level
7.1
AR Points
3
Word Count
19,049
Interest Level
Middle Grades (MG 4-8)
Genre
Nonfiction
AR Quiz #
308331 EN
About this book
Why are we still here when other creatures have been turned to stone forever? This book digs up the dirt on survival and extinction. Find out when bacteria and slime ruled the earth and why rabbits eat their own poo.