Which statement is true about nitrogen and oxygen?
a. they make up about 99.9% of the human b...
Biology, 08.11.2019 02:31 beepbeep123
Which statement is true about nitrogen and oxygen?
a. they make up about 99.9% of the human body
b. they are both used to make water molecules
c. they are both made of protons, neutrons, and electrons.
d. they both contain no subatomic particles
Answers: 1
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