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CBSE Notes 2011-2012

Excessive exposure of humans to U V-rays results in (i) damage to immune system (ii) damage to lungs...

Multiple choice question

Excessive exposure of humans to U V-rays results in
(i) damage to immune system
(ii) damage to lungs
(iii) skin cancer (iv) peptic ulcer

unknown

(i) and (ii)

unknown

(ii) and (iv)

unknown

(i) and (iii)

unknown

(iii) and (iv)