Question

Why do birds and mammals need more energy?

• A. They have to look after their young ones.
• B. They have to escape from their enemies.
• C. They have to produce heat for keeping their body warm.
• D. All of these

Answer 1

The correct option is C

They have to produce heat for keeping their body warm.

They have to produce heat for keeping their body warm.

Birds and mammals are warm-blooded animals that maintain a constant body temperature irrespective of their surrounding temperature.