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ASeriesOfPoorChoices , 7 months ago This is why: A) in spaceships, you can have 100% oxygen environments, at low pressures B) scuba divers replace nitrogen with helium for deep dives (trimix) - and reduce oxygen. As for replace oxygen: yes, but that would kill us very quickly.
This is why:
A) in spaceships, you can have 100% oxygen environments, at low pressures
B) scuba divers replace nitrogen with helium for deep dives (trimix) - and reduce oxygen.
As for replace oxygen: yes, but that would kill us very quickly.