They release oxygen into the air that animals breathe. They put nutrients into the soil that plants use to grow. They provide shelter in forests where animals can hide. They use sunlight to make food for plants and animals.
I gave my students this multiple choice question: In a forest, how do decomposers help other organisms survive?

Only one answer is correct among these 4 choices:
- They release oxygen into the air that animals breathe.
- They put nutrients into the soil that plants use to grow.
- They provide shelter in forests where animals can hide.
- They use sunlight to make food for plants and animals.

Could you tell me which one is correct?

They put nutrients into the soil that plants use to grow.