Nitrogen how much of earths atmosphere?
a 100%
b78%
c 22%
d0%...
![Biology](/tpl/images/cats/biologiya.png)
Biology, 21.10.2019 22:30, talahtoo6659
Nitrogen how much of earths atmosphere?
a 100%
b78%
c 22%
d0%
![answer](/tpl/images/cats/otvet.png)
Answers: 3
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