Explain why very small animals are rarely found in polar region.

Explanation

### Step-by-Step Solution:

1. **Understanding Small Animals**: Small animals typically have a larger surface area relative to their volume. This characteristic is crucial in understanding their heat retention capabilities.

2. **Heat Loss Mechanism**: Due to their larger surface area, small animals lose body heat more rapidly than larger animals. This is particularly significant in cold environments, such as polar regions, where temperatures are extremely low.

3. **Energy Requirement**: To maintain their body temperature in cold conditions, small animals must expend a considerable amount of energy. They need to generate heat through metabolic processes to counteract the rapid heat loss.

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