CFC's cause most dramatic destruction. They react with ozone and deplete it.
The ozone depletion is most dramatic at the poles. It is because of the low temperature there.
at the southpole
Ozone depletion is most noticeable at the poles. It is because of low temperatures.
The chlorine from CFCs do most damage to the ozone layer.
Guns do not cause destruction. They may be used by people that cause destruction.
Tsunami
Very low risk. Commerical aircraft are fitted with catalytic ozone destruction filters that remove most ozone (that is not destroyed by the heat of sudden compression to cabin pressures). People with asthma may notice an elevated ozone level.
The possible causes of the destruction of resources are the pollutions which are made by humans and abusive use of natural resources, the primary cause of the destruction of resources. Most of us do not think the causes of destruction of the resources of the earth because people only think for their own benefits and forget that the resources of the earth are limited.
Ozone levels have been decreasing because of ozone depleting chemicals like chlorofluorocarbons (CFCs). Thanks to worldwide agreement and compliance with the 1987 UN Montreal Protocol (which agreed to phase out ozone depleting chemicals) global ozone depletion is no longer increasing. The Montreal Protocol is the most (some would say only) successful international agreement and scientists hope the ozone layer will have completely recovered by 2060.
Carbon dioxide
surface waves
Surface waves