Plants release oxygen during photosynthesis.
During photosynthesis, plants take in ___ gas and release ___ gas.
They began to discuss about photosynthesis. Kenneth had good knowledge about photosynthesis so he went on to explain that plants release oxygen during the process of photosynthesis. Plants, like animals use oxygen for respiration.
Meanwhile John was curious that, why all the oxygen of atmosphere does not get used up ?Choose the correct explanation for John's question.