9 years ago
Acid rain showers make major contribution to largest ever extinction
The Permian was a geologic period that ended more than 250 million years ago. During this time the Earth consisted of one super continent called Pangea. Forests flourished on it and a large ocean called Panthalassa teemed with life. At the end of this period the Earth had an environmental crisis that caused the largest mass extinction ever recorded. Scientists suggest that a series of massive volcanic eruptions that deposited rocks now known as the...
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