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Question
Which of the following process returns the oxygen back to the atmosphere?
Which of the following process returns the oxygen back to the atmosphere?
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Solution
The correct option is C Photosynthesis
∙ Photosynthesis: It is the process in which carbon dioxide and water, in the presence of sunlight, is converted into glucose and oxygen.
∙ Respiration: It is the process by which food is broken down to obtain energy with the help of oxygen.
∙ Combustion: It is a chemical process which makes use of oxygen in the air to produce heat and light.
∙ Oxygen is further used up when nitrogen reacts with it to form oxides of nitrogen.
∙ Photosynthesis: It is the process in which carbon dioxide and water, in the presence of sunlight, is converted into glucose and oxygen.
∙ Respiration: It is the process by which food is broken down to obtain energy with the help of oxygen.
∙ Combustion: It is a chemical process which makes use of oxygen in the air to produce heat and light.
∙ Oxygen is further used up when nitrogen reacts with it to form oxides of nitrogen.
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