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Volcanoes Could Be Responsible For The First Puffs of Oxygen on Earth – ScienceAlert

Most life needs oxygen to thrive, and science shows that O2 began to show up in Earth’s atmosphere in serious amounts some 2.4…

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Most life needs oxygen to thrive, and science shows that O2 began to show up in Earth’s atmosphere in serious amounts some 2.4 billion years ago. However, there was also a small injection of oxygen around 100 million years earlier than that and the origin…

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