CFC gases which are pollutants are responsible for the depletion of ozone layer. CFC convert ozone to oxygen and make it useless for the absorption of UV radiation.
Ozone is very vital. If it is removed, it will be destruction for life on earth.
If the ozone is removed from the upper atmosphere then the UV rays will enter the earth's urface. These UV rays are high frequency and are very harmful for life on earth.
Oxygen has no role as such in the atmosphere, its importance is related to when it is removed from the atmosphere, as in respiration and/or oxidation.
Ozone layer
It would eventually lead to extinction. The reason being ozone is a protector for us in the atmosphere.
No it is not. ozone is part of atmosphere.
The ozone is the triatomic form of ozone. It is present in the form of ozone layer in the atmosphere.
The ozone is present in the atmosphere as ozone layer. It is present as a pool of ozone molecules.
The stratosphere region of atmosphere has the ozone. It is present as the ozone layer.
Ozone rises in the atmosphere.
The ozone is undesirable in the tropospheric region of the atmosphere. It is termed as ground ozone.
It is a good thing for the ozone to be in the upper atmosphere. It is due to the fact that ozone in upper atmosphere forms the ozone layer.