Question

The excessive exposure of humans to ultraviolet rays results in:

1. damage to immune system
2. damage to lungs
3. skin cancer
4. peptic ulcers

पर्याय

• (i) and (ii)

• (ii) and (iv)

• (i) and (iii)

• (iii) and (iv)

Answer 1

(i) and (iii)