Q. Consider the following statements:

1. Mammals from colder climates generally have shorter ears and limbs to minimise heat loss.
2. The blubber in seals acts as an insulator.

Which of the above is / are correct?
Answer: Both 1 and 2
Notes: Mammals from colder climates generally have shorter ears and limbs to minimise heat loss. (This is called the Allen's Rule.) In the polar seas aquatic mammals like seals have a thick layer of fat (blubber) below their skin that acts as an insulator and reduces loss of body heat.