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23 Nov 2019
Other than moisture, what are the three major components of the airyou breathe?
78% oxygen, 21% hydrogen, 0.9% nitrogen
78% oxygen, 21% nitrogen, and 0.9% helium
78% nitrogen, 21% oxygen, and 0.9% argon
78% nitrogen, 21% hydrogen, and 0.9% oxygen
Other than moisture, what are the three major components of the airyou breathe?
78% oxygen, 21% hydrogen, 0.9% nitrogen
78% oxygen, 21% nitrogen, and 0.9% helium
78% nitrogen, 21% oxygen, and 0.9% argon
78% nitrogen, 21% hydrogen, and 0.9% oxygen
Bunny GreenfelderLv2
21 Feb 2019
