Question

Guess who am I? I am present in air. I enter your lungs when you inhale air. You cannot live without me. I give energy to your body.
A) Hydrogen B) Oxygen C) Nitrogen D) Carbon dioxide

Answer 1

B) Oxygen. Because we need oxygen to produce energy.
Thanks.

Answer 2

Hey there!!!

here ur answer:

ur answer is option -B
Because we cannot live without oxygen.it also present in air.
thereore,we cannot live without that.

Hope this helps u a lot

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