Question

what is the necessity of oxygen​

Answer 1

Lungs take in oxygen for the combustion of food and they eliminate the carbon dioxide produced. It is also important to point out to the students that a lack of oxygen or breathing pure oxygen is detrimental to our health.

Answer 2

Oxygen is necessary for respiration of human beings as well as animals. And without nascent oxygen and molecular oxygen water cannot be formed. That is why oxygen is very necessary.

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❤Pratishtha❤