Question
The UV radiations are injurious.
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Answer
- When ultraviolet (UV) radiation falls on the cells of living organisms it is absorbed in the DNA and proteins present in the nucleus.
- The high energy of UV radiations break the chemical bonds within these molecules.
- This results in damage to the skin cells and cause skin cancers of various types.
- High doses of UV-B radiations also cause inflammation of cornea called snow blindness, cataract, etc. The UV radiations therefore are injurious.
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