Oxygen is O2. Ozone is O3.
Ozone is a tri oxygen molecule. It is formed in a natural process by the action of UV light on oxygen molecule.
See "What is the ozone layer?"
The ozone layer consists of pool of ozone molecules. they are allotrope of oxygen molecule.
No oxygen is not a danger to ozone layer in stratosphere. It is because oxygen itself participates in the creation of ozone.
Ozone is created by the oxygen molecules. When the UV falls on oxygen, ozone is formed.
Uranus does not have a ozone layer. It does not have a oxygen and no UV radiation to convert it into ozone.
The ozone layer is broken down by UV. It decomposes it into nascent oxygen and oxygen molecule.
No there is no ozone layer on mars. It is because of no proper oxygen there.
Ozone layer is formed by UV radiations. These UV rays decompose oxygen to 2 nascent oxygen which reacts with oxygen to form ozone.
Oxygen cycle is at ground level. Ozone layer is in atmosphere.
Ozone is O3.
Ozone layer is getting depleted due to release of CFC gases. CFC gases react with ozone and break it into oxygen. So, holes in ozone layer are places where ozone is broken into oxygen.