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Biodiversity and Conservation — BIOLOGY STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceBIOLOGYBiodiversity and Conservation2 Marks
Question
Explain why very small animals are rarely found in polar region.
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Answer

Lose 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. Lose 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.

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