A student places one piece of chalk into a bowl with vinegar and another into a bowl with water. The next day she observes that the chalk in the water is mostly unchanged but the chalk in vinegar has pieces missing.

Which option describes a process in nature similar to the experiment? A.
heavy rainfall causing a landslide

B.
rocks at the bottom of a waterfall

C.
acid rain falling on a limestone sculpture

D.
salt water waves rolling over a rocky shoreline

E.
moving water of a river bumping rocks against each other