A) bio pollutants
B) ozone layer
C) nuclear blast
D) deforestation
Correct Answer: B
Solution :
Ozone layer is not dangerous. It is a type of layer or shield, which is present in the stratosphere. It is also called ozonosphere. In stratosphere ozone is being formed and photo dissociated. It dissipates the energy of UV radiations. \[{{\text{O}}_{\text{3}}}\,{{\text{O}}_{\text{2}}}\,\text{+}\,\text{ }\!\![\!\!\text{ O }\!\!]\!\!\text{ }\] Because of it ozone sphere functions as shield against strong UV radiations. Protection from UV radiations is proportional to thickness ozone layer.
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