Question

What do all birds have in common? a) All birds can fly b) All birds live in nests high in trees c) All birdshop when they walk. d) All birds have feathers and hatch from eggs​

Answer 1

Answer:

All birds have the following key features: they are endothermic (warm-blooded), have two legs, and lay eggs.

Answer 2

option a is correct because all birds can fly