The ozone hole and the dangerous radiatios

Other chemical substances present in aerosol bombs, air conditioners, refrigerators and estinguishers lessen the ozone
stratum in the ozonosphere and give origin to the well known "ozone hole".  This phenomenon lets very dangerous radiations for human beings go into atmosphere. Moreover when there are very sunny days and the pollution percentage in the air is very high, the ozone is present at very low altitudes and it becomes very unsafe for the man.

In an hour we can stand up only to an assumption of ozone equal to 200 millionth gram per cubic metre of air.

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