Excessive exposure of humans to UV-rays results in
damage to immune system
damage to lungs
skin cancer
peptic ulcers
A
damage to lungs
B
peptic ulcers
C
damage to immune system
D
skin cancer
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Solution
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UV rays or ultraviolet rays can affect human health in many ways like causing skin cancer and a weakening immune system. Excessive exposure to UV rays can lead to skin cancer because the UV rays cause damage to the DNA in skin cells. UV rays also affect the distribution and activity of cells that trigger immune responses thus, making the immune system weak. UV rays first affect the skin and the whole body.
So, the correct answer is option A and C i.e. 'damage to immune system' and 'skin cancer'.
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