Citazione Originariamente Scritto da lesliemartindale Visualizza Messaggio
I think they are ozone holes. Ozone is a form of oxygen that is present in small but crucial amounts in the stratosphere, between six and thirty miles above the surface of the earth. The picture is really scary one because ozone is the one of the important layer for the earth. The ozone layer absorbs solar ultraviolet radiation, protecting humans from skin cancer, cataracts, and immune system deficiencies. We must take care of our ozone.
Bullshit... I think you should take a basic course of meteorology...