Question

how we get o oxygen at night, in absence of photosynthesis​

Answer 1

Answer:

Plants release oxygen during the day in the presence of natural light through the process of photosynthesis. While at night, the plants uptake oxygen and release carbon dioxide, which is called respiration.

Explanation:

Plants release oxygen during the day in the presence of natural light through the process of photosynthesis. While at night, the plants uptake oxygen and release carbon dioxide, which is called respiration.Oxygen inhibits photosynthesis in plants, even at O 2 levels as low as 2% or less (Björkman, 1966) . This phenomenon, known as the Warburg effect (Turner and Brittain, 1962), is exacerbated under conditions of low CO 2 , particularly under conditions of light saturation. ...

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Answer 2

Explanation:

there are plants only A few plants that do dark respiration and so some plants will be doing its normal deed...