They cool the land surface. They carry acids into the soil. They bring freshwater to land organisms. They build up mountains.
I gave my students this multiple choice question: Clouds bring rain and snow to Earth's surface. How do rain and snow most support life on Earth?

Only one answer is correct among these 4 choices:
- They cool the land surface.
- They carry acids into the soil.
- They bring freshwater to land organisms.
- They build up mountains.

Could you tell me which one is correct?

They bring freshwater to land organisms.