Question

which event typically causes upwelling?
wind blows warm water away from the shore.
warm water rises to the surface of the ocean.
neap tides move cold water away from the shore.
cold water falls to the bottom of the ocean and pushes warm water up.

Explanation:

Upwelling is a process where deep, cold water rises to the surface. When wind blows warm water away from the shore (due to the Coriolis effect and Ekman transport in oceanography), it creates a space for deeper water to move up to the surface. Warm water rising on its own (without wind - driven removal) is not upwelling. Neap tides are related to the gravitational pull of the moon and sun and do not typically cause upwelling in the described way. Cold water falling to the bottom and pushing warm water up is not the mechanism of upwelling. Upwelling is mainly driven by wind - induced movement of surface water.

Answer:

Wind blows warm water away from the shore.