Hoe herken je of er weinig zuurstof in de lucht zit?
We hebben allemaal zuurstof nodig, maar niet zoveel als je zou verwachten. De mens heeft aan zuurstofconcentratie in de lucht minimaal 19,5 procent nodig om normaal te kunnen ademen. De…
We hebben allemaal zuurstof nodig, maar niet zoveel als je zou verwachten. De mens heeft aan zuurstofconcentratie in de lucht minimaal 19,5 procent nodig om normaal te kunnen ademen. De…
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