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Primordial oceans had oxygen 250 million years before the atmosphere

Research by a University of Minnesota Duluth (UMD) graduate student Mojtaba Fakhraee and Associate Professor Sergei Katsev has pushed a major milestone in the evolution of Earth's environment back by about 250 million years. While Oxygen is believed to have first accumulated in Earth's atmosphere around 2.45 billion years ago, new research shows that oceans contained plentiful oxygen long before that time, providing energy-rich habitat...

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Primordial oceans had oxygen 250 million years before the atmosphere

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