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History of Mesozoic Life loading

Life diversified during the Mesozoic, including the dinosaurs,until the mass extinction that came from a giant asteroid impact.

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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.
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    History of Mesozoic Life

    History of Mesozoic Life

    by CK-12 //basic
    An overview of life of the Mesozoic Era.
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  • Video
    Asteroid Aftermath-Dinosaur Extinction

    Asteroid Aftermath-Dinosaur Extinction

    by CK-12 //basic
    Learn about the great dinosaur extinction through graphics, stories, and history by watching this extremely captivating video.
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  • Real World Application
    Dino Eve

    Dino Eve

    by CK-12 //basic
    The common ancestor of theropod dinosaurs is a small, non-specialized reptile.
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  • Real World Application
    Could We Stop a Killer?

    Could We Stop a Killer?

    by CK-12 //basic
    There are three categories of actions that humans could take to keep an asteroid from hitting Earth. None is very practical.
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  • Real World Application
    The Petrified Forest

    The Petrified Forest

    by CK-12 //basic
    The Petrified Forest, Arizona contains fossils of nine extinct tree species and fossils created by other processes.
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