How have the animals living in polar regions adapted to the extremely cold climate ?

Explanation

**Step-by-Step Solution:**

1. **Introduction to Polar Animals**: Animals living in polar regions have developed unique adaptations to survive in extremely cold climates, where temperatures often drop below freezing and the environment is covered in snow.

2. **Insulation through Fat and Fur**: One of the primary adaptations is the presence of a thick layer of fat, known as blubber, beneath their skin. This blubber acts as insulation, helping to retain body heat in frigid temperatures. Additionally, these animals have thick fur that further protects them from the cold.

3. **Surface Area to Volume Ratio**: Polar animals have a lower surface area relative to their volume. This means that they lose less heat to the environment. The smaller surface area helps to minimize heat loss, while their larger volume helps to retain heat.

...