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Why can oxygen accumulation be considered important for two aspects of complex life?

Answer and explanation

Correct answer: It enabled efficient aerobic respiration and helped form an ozone layer that shields life from harmful ultraviolet radiation

A is correct. Oxygen supports aerobic respiration, which releases more usable energy from food than anaerobic processes. Atmospheric oxygen also enabled ozone formation; the ozone layer absorbs much harmful ultraviolet radiation and protects life at the surface.

Related tags

OxygenOzone LayerEvolution Of The EarthThe Origin And Evolution Of The EarthGeographyClass 11 Mcq

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