If a bird is transferred from `30^(@)C` to `15^(@)C`, the body temperature will change to

Options

A. `15^(@)C`
B. `20^(@)C`
C. `5^(@)C`
D. No change

Answer

To solve the question regarding the change in body temperature of a bird when it is transferred from 30°C to 15°C, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Initial Condition**:
- The bird is initially at a temperature of 30°C. This is considered a higher temperature compared to the surrounding environment.

2. **Identify the New Environment**:
- The bird is then transferred to an environment with a temperature of 15°C, which is significantly lower than 30°C.

3. **Recognize the Nature of Birds**:
- Birds are warm-blooded animals (endothermic), meaning they can regulate their body temperature independently of the external environment.

4. **Thermoregulation Mechanism**:
- Birds possess a thermoregulation unit that allows them to adapt their body temperature to match the surrounding temperature. This mechanism helps them maintain a stable internal environment despite external temperature changes.

5. **Determine the Final Body Temperature**:
- Since the bird is moved to a colder environment (15°C), its body temperature will adjust to this new temperature. Therefore, the bird's body temperature will decrease from 30°C to match the surrounding temperature of 15°C.

6. **Conclusion**:
- The body temperature of the bird will change to 15°C after being transferred to the colder environment.

### Final Answer:
The body temperature will change to **15°C**.

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