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The lack of free oxygen in the early atmosphere indicates which long-term development?

Answer and explanation

Correct answer: Later formation of oxygen-rich atmosphere through biological processes

Free oxygen increased later due to activities of photosynthetic life. In exams, do not treat the early atmosphere as present-like.

Related tags

OriginEvolutionEarly AtmosphereOxygenEarly And Modern TheoriesThe Origin And Evolution Of The EarthGeographyClass 11 Mcq

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