What term describes the natural process by which deeper water is brought to the ocean and how does this affect marine

Upwelling is the natural process by which deeper water is brought to the ocean.
And
Currents assume a gigantic part in marine profitability, through a procedure called upwelling. ocean life is gathered in the sunlit waters close to the surface, yet most natural matter is far underneath, in profound waters and on the ocean depths. at the point when streams upwell, or stream up to the surface from underneath, they clear key supplements back to where they're required most.