They both make their own food. They both are able to grow. They both take in oxygen to survive. They both get energy directly from the Sun.
I gave my students this multiple choice question: Which trait do cows and grass have in common?

Only one answer is correct among these 4 choices:
- They both make their own food.
- They both are able to grow.
- They both take in oxygen to survive.
- They both get energy directly from the Sun.

Could you tell me which one is correct?

They both are able to grow.