Society can make a lot of fun uses of oxygen. In bad society, you could burn it, while you could make intelligent remarks about oxygen in good society. All share the fact that it is a vital part of breathable air.
Oxygen of couse is used to breathe!
Oxygen
gasses
Today - no. But they are working on it. If they can find a way to efficiently separate the hydrogen from the oxygen you can run a vehicle on the hydrogen.
Not sure about ancient usees, but today oxygen is used for oxygen therapy- medically. As well as at Oxygen bars for recreation.
fire balloons breathing and photosynthesis
The atmosphere has the same amount of oxygen today as it did 1000 years ago. Although oxygen gets used up in various ways, through fire and through metabolism, oxygen is constantly being released into the atmosphere by green plants.
Endosymbiosis
No one would be here today if there was no oxygen.
Society can make a lot of fun uses of oxygen. In bad society, you could burn it, while you could make intelligent remarks about oxygen in good society. All share the fact that it is a vital part of breathable air.
21%
Very probable the reaction of francium with oxygen is faster.
Oxygen of couse is used to breathe!
Oxygen
gasses
Today - no. But they are working on it. If they can find a way to efficiently separate the hydrogen from the oxygen you can run a vehicle on the hydrogen.