carliprice7665 carliprice7665

29-10-2021
Biology

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when did oxygen begin to accumulate in the atmosphere

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rasberryfairy09876 rasberryfairy09876

29-10-2021

Answer:

2.33 billion years ago.

Explanation:

Hope this helps <3

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crewt5827 crewt5827

29-10-2021

2.4 billion years ago the oxygen concentration in earth’s atmosphere increased suddenly from trace amounts to appreciable quantities

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