It is a layer in earths atmosphere and contains high concentrations of ozone and absorbs nearly 99% of the sun UV rays that is potentially damage to the life on the earth. The UV rays that comes directly from the sun is very dangerous and harmful and anyhow due to the global warming and the layer has been broken down at a higher rate. Nearly at a rate of 1/2 very year the layer has been slowly depleting due to the activity of human mankind.
Even small increase in ultraviolet radiation would be devastating to nearly all species of both plants and animals. Ultraviolet radiation causes direct damage to plants and can increase the number of skin cancers among humans.
Most of you are thinking that the ozone hole is the hole in the ozone layer and exactly it is not so. It is a depletion in ozone layer, for example, in semiconductor physics, the electrons and holes cannot diffuse until the depletion region is formed and once it is formed it can easily diffused, similarly due to the ozone layer depletion, the UV rays are get easily passed through this layer. As day by days goes, this tends to deplete more and the UV rays can reach with the maximum heat. so please save our earth from global warming, reduce the use of green house gases.
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