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Earth’s First Known Mass Extinction Event Starved Life of Oxygen

https://www.universetoday.com/....158557/earths-first-

Earth's First Known Mass Extinction Event Starved Life of Oxygen - Universe Today
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Earth's First Known Mass Extinction Event Starved Life of Oxygen - Universe Today

Something happened to lower Earth's oxygen level during the Ediacaran Extinction. Life on Earth was never the same.
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