The ozone

The ozone is present in the highest zones of the atmosphere; the oxygen (O2) changes
itself into ozone (O
3) thanks to the action of the ultraviolet rays coming from the sun
and the cosmic rays.This gas has the task to protect us from the dangerous action that these rays can have on our bodies.The ozone works as a large filter which blocks the way of the radiations that are injurious to human beings’ life on the earth.Besides when it
is very hot and sunny and the pollution in the air is very high,
the ozone is present in the atmosphere even at low altitudes. Here it combines with the other polluting substances
and becomes poisonous for the man and for the environment. In the period taken into consideration in Umbria this substance has a concentration next to or sometimes even higher than the limit values.
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