Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
7.0
Points
2.0
Fiction/Nonfiction
Nonfiction
Word Count
9192
Points per Word
0.000218
Page Count
48
Points per Page
0.041667
Series
10: Geography
Description
This book ranks the ten most destructive ecosystem invaders, based upon how quickly they multiply and spread, how they change their surrounding environment, and whether they pose a threat to public health.