Why can u breathe on a plane? How does oxygen get in?
The oxygen is there, but the air pressure is so low that it can't get into the bloodstream. Cabins are pressurized to allow people to breathe normally.
Updated on Saturday, February 04 2012 at 10:55AM EST
Source:
blogs.howstuffworks.com/...
Collections:
air pressure,
plane,
oxygen
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