Answer the following question given this paragraph: 

Upwelling takes place at some coastlines or along the Equator. Upwelling brings cool, nutrient-rich water to the surface.


Q: What takes place at some coastlines or along the equator and brings cool, nutrient-rich water to the surface?

 Choices:

- high tide

- red tide

- flooding

- upwelling

A:
upwelling
