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Monday 25 March 2013

Reformation of Ozone Layer(2013 news)

Recent study have found that there is a fine decrease on the graph of Depletion of Ozone layer. Previously it was decreasing with full acceleration but now the graph not only slows down but it has shown a good increment on the reformation of ozone layer.


What is Ozone Layer ?
Ozone layer is basically a gas [O3] in which 3 elements of oxygen are bounded with each other together to form a compound of Ozone. Ozone layer is a blanket which protect our earth from the harmful U.V rays. ozone layer gets its name from ozone gas, an allotrope, of the element oxygen. Ozone gas has become so synonymous with the ozone layer that people now refer to the layer as 'the ozone.' 

If we are going to encounter with these rays directly from the sun then we are going to face many disease and skin problems:-ultraviolet radiation causes erythema, sunburn, photo damage, photocarcinogenesis, damage to the eyes, alteration of the immune system of the skin, and chemical hypersensitivity. Skin cancers most commonly produced by ultraviolet radiation/rays.



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Ozone Layer depletion.

Many people among us are aware that our ozone layer was depleting in the near by areas of Antarctica which was increasing again and again. The ozone layer can be depleted by free radical catalysts, including nitric oxide , nitrous oxide, hydroxyl, chlorine , and bromine.Especially chlorofluorocarbons (CFCs) and bromofluorocarbons(BrFCs).

These highly stable compounds are capable of surviving the rise to the stratosphere, where Cl and Br radicals are liberated by the action of ultraviolet light. Each radical is then free to initiate and catalyze a chain reaction capable of breaking down over 100,000 ozone molecules. The breakdown of ozone in the stratosphere results in the ozone molecules being unable to absorb ultraviolet radiation. Consequently, unabsorbed and dangerous ultraviolet-B radiation is able to reach the Earth's surface. 

Ozone levels over the northern hemisphere have been dropping by 4.77% per decade. Over approximately 5.39% of the Earth's surface, around the north and south poles, much larger seasonal declines have been seen, and are described as ozone holes.


No Need to worry as Ozone layer is reforming again.


Recent study have found that there is a fine decrease on the graph of Depletion of Ozone layer. Previously it was decreasing with full acceleration but now the graph not only slows down but it has shown a good increment on the reformation of ozone layer.

From the last decade researchers have found that Ozone layer is recovering itself again which is a good news and the reason behind this is just humans intelligence only. After knowing that Ozone layer is being depleted and we are now in a big danger,we humans have reduced the use of chlorofluorocarbons (CFCs) which helped environment a lot and it is now recovering on its own.


What would have happened if we have increased the use of (CFCs) and other harmful gases?

If we will increase the use of those gases then it would be again found to be a big reason of worry about the future of the earth. If we would have not stopped all this then it might be possible that we have to leave the whole southern part of the earth and humans might be living on northern part of the earth only.

If we will not going to think about global warming also, then we might going to loose the whole earth and it will be impossible to recover from those hazardous injury which our earth is going to face in future. 

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