Why don't some animals have ears?

Do animals like snakes and grasshoppers have ears?

Life processes - Humans and other animals - Humans' and other animals' needs

Learning Points
Humans and other animals have some common features.

Some animals use organs other than ears to detect sound.

A Twig Context Film. Reinforce and extend the learning required by the curriculum. Twig’s context films show abstract concepts in action in the real world.