How are waves related to shifting shorelines?

They both have to do with shifiting water and

water itself.

As waves move from deep water toward the shoreline, the ocean bottom alters their direction and strength, just as a lens bends and reflects rays of light. ... This subtle but steadily flowing river of sand moves laterally up and down the shoreline, as well as offshore during storms and back toward land between storms.

Explanation:

c8h10 is your answerr

i think   the answer is c hope i'm right