Q. 475.0( 4 Votes )

The excessive exposure of humans to ultraviolet rays results in:

(i) Damage to immune system

(ii) Damage to lungs

(iii) Skin cancer

(iv) Peptic ulcers
A. (i) and (ii)

B. (ii) and (iv)

C. (i) and (iii)

D. (iii) and (iv)

Answer :

Damage to immune system and skin cancer

Excessive exposure of UV radiations to human skin cells results in destruction of genetic material thus leading to uncontrolled growth of cells and hence causing cancer. Exposure to UV radiations also causes immunosuppression and hence damage to immune system.

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