mass erxtinction
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11 Terms
What was the main cause of the 1st massive extinction?
Climate became too cold.
When did the 2nd massive extinction occur?
359 million years ago.
When did the 1st massive extinction occur?
443 million years ago.
What percentage of marine species died during the 2nd massive extinction?
70%
List two causes of the 3rd massive extinction.
Glaciation
Volcanic eruptions
What percentage of animal species disappeared during the 1st massive extinction?
50%
When did the 3rd massive extinction occur?
251 million years ago.
What percentage of marine species disappeared during the 3rd massive extinction?
96%
List two causes of the 4th massive extinction.
Volcano eruptions
Meteorite impact
When did the 5th massive extinction occur?
65.5 million years ago.
