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Check out this website :http://science.nationalgeographic.com/science/prehistoric-world/cambrian.html

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12y ago
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13y ago

The bacteria in the air expanded and Pangea started to come apart. the biggest continent was Gonwana before it became Antarctica. Hope I helped a lot.

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12y ago

All existing animal phyla developed over a relatively short-period of time.

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16y ago

The "Cambrian Explosion"

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Q: What was significant about the Cambrian period?
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