Why do we need oxygen?

To store energy in the form of food

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To convert water into usable form

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To break down food and release energy

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To destroy dead cells

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Solution

The correct option is C
To break down food and release energy

The primary reason all living things need oxygen is to break down (or “burn”) food to release its stored energy to perform various life processes.

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Similar questions

The cellular process of breaking down food to release energy is known as _____ .

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