Question

Although food and oxygen both are necessary for life, man can live without food for number of days, but he dies without oxygen within a few minute. Why?

Answer 1

Answer:

Because, food is needed for energy, and after eating food, it is conserved, and lasts long.

However oxygen is needed for heart to pump blood, brain to function etc. And it doesn't last long.

Therefore oxygen should be quickly replenished to live than food

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Explanation: