Question

why we need oxygen to breath?​

Answer 1

Here is your answer

We breathe because oxygen is needed to burn the fuel [sugars and fatty acids] in our cells to produce energy.) ... (The energy station of the cells, called mitochondria, process oxygen to power the cells. As part of the combustion process, carbon dioxide is released.)

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Answer 2

Answer:

we need it so because the oxygen will be used to break glucose into the simple substances..

Explanation: