Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
3.9
Points
0.5
Fiction/Nonfiction
Nonfiction
Word Count
1794
Points per Word
0.000279
Page Count
32
Points per Page
0.015625
Series
Unusual Life Cycles
Description
Learn about the unusual life cycles of mammals. From mammals that lay eggs to those that give birth to 50 babies at once.