Question

Very small animals are rarely found in polar regions. Give two reasons

Answer 1

Since small animals have large surface area relative to their volume, they tend to loose body heat very fast when it is cold outside. Then they have to expend much energy to generate body heat through metabolism. This is the main reason why very small mammals are rarely found in polar regions

Answer 2

Explanation:

• The Small animals are found rarely in the region of polar.  They have such “large surface area” when compared to body volume, when it is cold outside they lose their heat.
• The temperature in polar region varies from -88 to 15 degree centigrade.
• This process makes them to utilize much energy to generate body heat through metabolism.
• And the large animals are having thick fur which would be helpful the animals to live in the cold conditions.