when did life appear on the earth?
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❤️The first known mass extinction in earth's history was the Great Oxygenation Event 2.4 billion years ago. That event led to the loss of most of the planet's obligate anaerobes.❤️
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heya!!
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3.5 billion years ago.
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⏬⏬⏬⏬
3.5 billion years ago.
✔️✌️
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