Cfcs Cause Deterioration Of The Ozone Layer



The deterioration of the ozone layer , caused by Cfcs, endangers the
lives of humans'. Cfcs have a diminishing effect on the ozone layer.
Furthermore, the deterioration of the ozone cause an increase of Ultraviolet
(UV) radiation which can have a negative effect on human skin and eyes. As a
writer for newsweek, I have investigated the scenario and found the following
information.
The earth's atmosphere is a blanket of air that surrounds the planet.
This atmospheric air is made up of many different gases, 78% nitrogen, 21%
oxygen, and 1% of a dozen or more other gases like carbon dioxide, helium, and
ozone.
This atmosphere extends many miles out from the earth's surface.
However, ...

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from roughly 6.5-30 miles from the
earth's' surface. The air on this region is much less dense than in the
troposphere, and it's a lot drier. The stratosphere is the area that contains
the majority of the ozone layer.
Past the stratosphere is the mesosphere which extends to 50 miles above
the planet. The last region is the thermosphere. The thermosphere's outermost
edge is roughly 600 miles above the surface of the earth. Beyond it, the
airless vacuum of space begins.
Oxygen is made up of two oxygen atoms that are bonded together. In the
periodic table it is represented by O2.
Like oxygen, ozone is a gas that is made up of oxygen atoms. However,
a molecule of ozone is made up of three atoms of oxygen bonded together,
therefore, O3, represents ozone. The ozone makes up only .01% of the atmosphere.
Furthermore, 90% of the ozone is found in the stratosphere. It is concentrated
in a layer between 7 and 22 miles above the earth's surface.
The massive depth of the ozone in ...

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hit, they
absorb the ray's energy and break apart, leaving behind an oxygen molecule and a
single oxygen molecule, O3>O2-O. At this time, the entire process repeats
itself making new molecules that are separated which combine to make new
molecules, over and again (Rowland and Molin 1991 p. 42).
As a result of this cycle, about the same amount of ozone is produced as
is broken down in the stratosphere. Therefore, the amount of ozone stays the
same under normal circumstances (Rowland and Molina 1991 p.43).
A constant and stable ozone layer are important for life on earth
because the high-energy UV rays that are absorbed in the ozone layer are
extremely dangerous. These rays can ...

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PAPER DETAILS
Added: 1/7/2004 08:34:31 PM
Category: Science & Nature
Type: Premium Paper
Words: 2231
Pages: 9

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