View Spread Looking at the Human Impact on the Environment with Graphic Organizers Planet Earth RL Grades 5-8 IL Grades 5-8 GRL S Details: Product type: Paperback Book 6-Pack ISBN: 978-1-4358-5161-0 Author: Jason Porterfield Copyright: 2009 Reading Level: Grades 5-8 Interest Level: Grades 5-8 GRL: S Lexile: 1000L Dimensions: 7 3/4" x 10 1/4" Paperback Book — $9.25 / $7.90 6-Pack — $55.50 / $47.40