the ozone layer contains a small amount of ozone. But its enough to absorb some of the suns harmful ultraviolet rays.
All of the same gases as the troposphere except for a low value of water vapor (mostly because its so cold at the interface). There is also a very small (but very important) amount of ozone and monoatomic oxygen.
Ganymede's atmosphere is composed mostly of oxygen and traces of ozone. It also contains small amounts of carbon dioxide and atomic hydrogen. The atmosphere is very thin compared to Earth's atmosphere.
Ozone layer is consisted in the stratosphere layer. This layer is very protective for human population.
Outer space has no ozone. Intergalactic space has plenty of O5+ (missing five electrons, out there too), indicating it was blown off of very hot stars... and is still too hot to form molecules. Earth's exosphere has very tiny amounts of ozone at lower altitudes, trending towards zero at "infinity".
The process can be done but at small level. The ozone amount are very high to be absorbed.
Over all the atmosphere, less than 0.0001%.
An eye drop holds very small amounts of liquids (: hope this helps
Volcanoes cause ozone depletion but very less. They release chlorine which can deplete small amount of ozone.
trace
This is the stratosphere. There is also ozone in the lower troposphere, but the ozone layer in the stratosphere contains helpful ozone that blocks much of the ultraviolet radiation. Without this layer, life on earth would be very difficult.
Ozone is not as small as we think it is. The amount of ozone is very large so cannot be done directly.
It protects us from UV-B from our Sun, and our bodies use it to fight infection.