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Which statement is true about nitrogen and oxygen?
A They make up about 99.9% of the human body
B. They both contain no subatomic particles
O
They are both made of protons neutrons and electrons.
o
They are both used to make water molecules.
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User Vinothp
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1 Answer

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C. They are both made of protons, neutrons and electrons
User Andrey Oshev
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