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15/12/2020 10:32 am
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Excessive exposure of humans to UV-ray s results in
(i) damage to immune system
(ii) damage to lungs
(iii) skin cancer
(iv) peptic ulcer
(a) (i) and (ii)
(b) (ii) and (iv)
(c) (i) and (iii)
(d) (iii) and (iv)
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15/12/2020 10:32 am
(c) (i) and (iii)