The Archean atmosphere could be described as A- oxygen deficient B- oxygen rich C- nitrogen rich D- ozone rich
Question
The Archean atmosphere could be described as A- oxygen deficient B- oxygen rich C- nitrogen rich D- ozone rich
Solution
The correct answer is A- oxygen deficient. The Archean atmosphere, which existed about 4 billion years ago, was largely devoid of oxygen. Oxygen began to accumulate in the Earth's atmosphere only after the Great Oxygenation Event, which occurred around 2.4 billion years ago.
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