Question

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PLEASE HELP ME
Very small animals are rarely found in polar regions. Give two reasons.
Carries 1 mark.
Class 12 CBSE

Answer 1

Answer:

Small animals have a larger surface area relative to their volume, and they tend to lose body heat fast when it is cold outside. They have to expend much energy to generate body heat through metabolism. So, small animals are rarely found in polar regions.

Answer 2

Answer:

Loss of body heat is directly proportional to the surface area. Since small animals have larger surface area relative to their volume they tend to lose body heat at a very fast rate in colder regions. Loss of body heat in colder regions could prove threat to their survival. This is the reason why very small animals are rarely found in polar regions.