Chlorine atoms
CFC's damage the ozone depletion. It causes decomposition in ozone layer.
Ozone can be decomposed by absorbing an ultraviolet (UV) photon. This is how ozone protects us from UV light. Ozone is unstable, and decays with time. Ozone is photocatalytically decayed by chlorine or bromine. Some ozone production is blocked by water vapor, and water vapor also provides a decay path for ozone.
Halogen Radicals can be called as catalyst in ozone destruction. They speed up the depletion of the ozone gas.
Ozone also stands near ground level besides the nitrogen oxides of smog. At lower pressures the deconversion of ozone into oxygen is slower, and at some altitude the intensity of ultraviolet converts oxygen into ozone at the same rate as its decomposition.
The ozone layer that filters ultraviolet radiation originated from
Ozone is (relatively) opaque to ultraviolet light.
The ultraviolet radiation is absorbed by the ozone layer. The ozone molecules do not allow only the ultraviolet radiations to pass through.
Harmful ultraviolet radiations are absorbed by the ozone layer.
The ozone layer absorbs ultraviolet radiation. The ozone layer is in the stratosphere. So, the thermosphere does not absorb radiation.
Titanium dioxide and zinc oxide are the sunscreens that scatter ultraviolet light.
An ozone converter contains a catalyst that converts Ozone (O3) into Oxygen (O2).
CFC's are causing destruction. They cause ozone decomposition.