It covers the bedrock layer in the earth. It has nutrients used by plants to grow. It holds many harmful pollutants. It dries quickly in sunlight.
I gave my students this multiple choice question: Why is it important to protect soil?

Only one answer is correct among these 4 choices:
- It covers the bedrock layer in the earth.
- It has nutrients used by plants to grow.
- It holds many harmful pollutants.
- It dries quickly in sunlight.

Could you tell me which one is correct?

It has nutrients used by plants to grow.