What special characteristic did this life form have

This preview shows page 1 - 3 out of 3 pages.

8. What special characteristic did this life form have that improved the atmosphere?
9. Which era is known as “the age of ancient life”?
10. How long ago did plants evolve?
11. Where did our fossil fuels come from?
12. In what era were mountains formed?
13. When Pangaea formed, what type of extinction occurred?
14. In what period did dinosaurs and mammals appear?

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture