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.

an economic of depression

answer(c) carved on a babylonian clay tablet that showed earth as a flat circular disk;