How do waves erode coastlines? check all that apply. -back-and-forth movement loosens sediment and rock. -large rocks are picked up and deposited in new areas. -continuous impacts loosen sediment and rock. -loose sediment is picked up and blown to other locations. -sediments scrape against one another and wear away surfaces.

- Back and forth movements that loosens sediments and rock

-  Large rocks are picked up and deposited in new areas

-  Continuous impacts loosen sediment and rock

-  Sediments scrape against one another and wear away

Coastal erosion is a natural process that occurs as the result of sea in the form of waves, tides or currents, striking the shore sediments are washed away and the coastline changes shape as a result. Erosion can happened under any condition but its rate tend to increase when the waves are powerful .

for example, no new evidence will demonstrate that the earth does not orbit around the sun (heliocentric theory), or that living things are not made of cells (cell theory), that matter is not composed of atoms, or that the surface of the earth is not divided into solid plates that have moved over geological timescales .