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Which natural events likely caused Earth's past mass extinctions?

User Thrag
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In my opinion

Mass extinctions happen because of climate change, asteroid impacts, massive volcanic eruptions or a combination of these causes. One famous mass extinction event is the one that lead to the extinction of dinosaurs, 65 million years ago.
I hope it’s help
User Horen
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Answer:

Its because of climate change, asteroid impacts, massive volcanic eruptions or a combination of these causes.

Step-by-step explanation:

User Crashtestxxx
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