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Acid rain - The culprit causes a great extinction
Scientists believe that volcanic eruption 250 million years ago caused acid rain to cause most organisms on Earth to become extinct.
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Scientists believe that volcanic eruption 250 million years ago caused acid rain to cause most organisms on Earth to become extinct.
Archaeologists have found fossils a strange reptile with many small bumps on its head, isolated on the vast desert in Africa 260 million years ago.