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15 March, 22:54

Which statement is true about nitrogen and oxygen?

A. They make up about 99.9% of the human body.

B. They are both made of protons, neutrons, and electrons.

C. They are both used to make water molecules.

D. Neither contains subatomic particles.

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  1. 16 March, 01:00
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    B, They are both made of protons, neurons, and electrons
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