Some people have bad lungs so they can't get enough oxygen.
no
My mother needs to use her oxygen tank to breathe.
Shark Bait
An oxegen tank is well of course a tank that has oxegen in it you use it when you cant breathe or when you old and unable to breathe without it
people with this disease normally will have to carry an oxygen tank with them where ever they go.
Oxygen tank!
Well people breath oxygen and plants use it in photosythesis
In short, they didn't fix it. The problem they had was an oxygen tank ruptured in the service module. What they did was to use the attached lunar module as a "life boat" - using its oxygen supplies.
they use oxygen mask to breath so they die in all the smoke
Yes, a tank of oxygen can be half full. The oxygen would be stuck in said tank meaning no more oxygen can get in unless refueld.
oxygen tank
Oxygen tank.