![Zawartość tlenu w powietrzu w masce - Jeff Neff [strażak]](https://1a-1791.com/video/s8/6/O/h/i/R/OhiRe.qNqd.jpg)
Zawartość tlenu w powietrzu w masce - Jeff Neff [strażak]
3 years ago
100
Normalne powietrze atmosferyczne zawiera od 20,8 do 21 procent tlenu. Niedobór tlenu, to sytuacja w której powietrze zawiera go mniej niż 19,5 %.
https://pubmedinfo.org/2020/09/29/zawartosc-tlenu-w-powietrzu-w-masce/
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