In cold climate, the animals have short tail, shorter limbs and ears, this is called :

Options

A. Allen's law
B. Bergam's law
C. Cope's law
D. Jordan's law

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about a specific phenomenon observed in animals that live in cold climates, where they have shorter tails, limbs, and ears.

2. **Identifying the Concept**: This phenomenon is related to how animals adapt to their environment, particularly in response to temperature.

3. **Recalling Relevant Laws**: The concept is linked to a specific biological law that explains this adaptation. The law in question is known as **Allen's Law**.

4. **Explaining Allen's Law**: Allen's Law states that animals living in colder climates tend to have shorter appendages (like tails, limbs, and ears) compared to their counterparts in warmer climates. This adaptation helps to reduce heat loss, as a more compact body shape minimizes the surface area exposed to the cold.

5. **Conclusion**: Therefore, the correct answer to the question is **Allen's Law**.

---