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*Extinction*

Published on Nov 24, 2015

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1.

*Extinction*

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What is Extinction?

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Extinction is when a specific species or group becomes extinct which means there are no living members left.

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What caused the extinction of the dinosaurs?

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Volcanic eruptions may have caused the Great Dying, which wiped out much of the earth's marine life.

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There are many different theory's.

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Humans have existed for 200,000 years on Earth. Biologists and paleoecologists (who study ancient ecosystems) estimate that humans have driven roughly 1,000 species extinct.

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Thanks for watching

Erin Kelly
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