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SVEN [57.7K]
3 years ago
12

How do we know that air we breathe is matter?

Chemistry
2 answers:
Viefleur [7K]3 years ago
6 0
Because all matter has density and since air has density then air is matter and plus EVERYTHING is made of matter
daser333 [38]3 years ago
5 0

Nerves inside us. They send signals to our brains.

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