DEFINATION: to release chlorine atoms which react with


Ozone is a naturally occurring
molecule containing three molecules of oxygen. At ground level, ozone is health
hazard and a major constituent of smog. In the stratosphere, ozone protects life
on earth by absorbing ultraviolet (UV) radiation from the sun. the release of chlorofluorocarbons
(CFC) and other ozone-depleting substances, which were used widely as
refrigerants, insulting foams and solvents.

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The wearing out or
reduction of the amount of ozone in the stratosphere is called ozone layer
depletion. One major human activity cause ozone depletion. Industries that
manufacture things like soaps, solvents, insulating foams, cooling things like ‘Take-Away’
containers, Refrigerators and Air Conditioners, use something called
chlorofluorocarbons (CFCs). These substances are heavier than air this substances
are carried high into the stratosphere by wind action, over time about two-five

Ozone layer depletion has
consequences on plants, animals and humans. This is because of the high UV
levels reaching us on earth. 


Ozone depletion is caused
by the release of chlorofluorocarbons (CFCs) and other ozone-depleting
substances (ODS). This substances are the substance that are used widely as
solvent, insulting foams and refrigerants. CFCs are heavier than air. CFCs are carried
into the stratosphere in a process that can take as long as 2 to 5 years. By
using satellites, aircraft and balloons, measurements of CFCs in the
stratosphere are made.

The ultraviolet radiation
from the sun causes CFCs to release chlorine atoms which react with ozone and
break apart. This happens when CFCs reach the stratosphere. This will cause it
to start chemical cycles of ozone destruction that will deplete the ozone
layer. One chlorine atom can destroy more than hundred thousand ozone

Methyl chloroform that
are used as a solvent in industrial processes for essential applications, halons
that are used in fire extinguishers, and methyl bromide that are used as a
pesticide are example of other chemicals that damage the ozone layer. When
halons and methyl bromide are broken apart, they release bromine atoms. Compared
to chlorine atoms, halons and methyl bromide are forty times more destructive
to ozone molecules.


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