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Byju's Answer
Standard IX
Biology
Processes Involved in the Oxygen Cycle
maintains oxy...
Question

maintains oxygen composition on Earth.

A
Photosynthesis
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B
Transpiration
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C
Nitrification
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Solution

The correct option is A Photosynthesis
Plants take in carbon dioxide and give out oxygen during photosynthesis. Thus, photosynthesis helps in maintaining the level of oxygen in the atmosphere.

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