The 6 Craziest Extinctions Ever

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occurs causing __ so drastic that most species are completely wiped out within a


and a __ at whether the 6th might be happening __ now.


or crawled in shallow seas. As newly created volcanic rock was worn down by __ and __,


and water got __ away as ice. This caused ocean levels to drop and shallow seas to __


lost __.


by early __. These plants were then eaten by the first crawling and __ insects.


plants absorbed __ C02 to create another round of __ cooling. They changed soil


oxygen. More than half of __ species essentially choked to death. Although __ in the


the next 100 __ years, these creatures would evolve into amphibians,


250 million years ago is the Permian extinction. The single worst mass extinction in __,


__ of tonnes of volcanic gases destroyed the ozone layer and the average __ temperature


__, devastating life on __.


this time early __ dinosaurs roamed the land. A __ volcanic rift opened


the Atlantic Ocean. The volcanoes spewed out CO2, increasing temperatures and killing about


did extremely well and during the next 135 million years, they grew to become some of




























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6 Sự tuyệt chủng kinh khủng nhất đã xảy ra

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