Given below are some adaptive features of animals:
(i) Layer of fat under the skin
(ii) Long, curved and sharp claws
(iii) Slippery body
(iv) Thick white fur
Which of them are the adaptive features of a polar bear?
1
(i) only
2
(i) and (ii) only
3
(i), (ii) and (iii) only
4
(i), (ii), and (iv) only