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Life During the Paleozoic loading

The Cambrian explosion was the sudden appearance of great diversity related to modern species.

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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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    Evolution Change: Deep Time

    Evolution Change: Deep Time

    by CK-12 //basic

    Contains a timeline that follows evolutionary landmarks from the Precambrian Period to the Cenozoic Era. Click on the dots on the screen to learn more about each big event.

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