Ponds have moving water. Ponds are smaller and shallower. Ponds are not surrounded by land. Ponds have a different amount of salt.
I gave my students this multiple choice question: How is a pond different from a lake?

Only one answer is correct among these 4 choices:
- Ponds have moving water.
- Ponds are smaller and shallower.
- Ponds are not surrounded by land.
- Ponds have a different amount of salt.

Could you tell me which one is correct?

Ponds are smaller and shallower.