What are two ways that an ocean can affect a coastline

Tides- the rise and fall of the oceans. Tides are caused by the gravitational pull of the moon on the water. Deconstructive waves- waves with a larger undertow than the actual waves coming in, taking sediment and other materials into the ocean.

answer; i believe the correct answer is ; large pieces of pangaea drifted in different directions over millions of years;