How ocean waves affect the shape of the land on our planet

The ocean waves cause erosion on the edge of the water.

Explanation:

Ex: You are at a beach, and the waves are very high today. As they come down faster and heavier, they push the water that was below them foward quickly which then erode the sand away.

Simple: They erode the sand at the water's edge.

Ocean waves cause erosion on the edge of the water