<meta http-equiv="refresh" content="1; url=/nojavascript/"> History of Mesozoic Life | CK-12 Foundation
Dismiss
Skip Navigation
loading

History of Mesozoic Life

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.
  • Real World Application
    The Petrified Forest

    The Petrified Forest

    by Jerrin Martus //basic

    The Petrified Forest, Arizona contains fossils of nine extinct tree species and fossils created by other processes.

Please wait...
Please wait...

Original text