Final answer:
The process of wearing rocks down into smaller pieces and then taking them away is called erosion.
Step-by-step explanation:
The process of wearing rocks down into smaller pieces and then taking them away is called erosion. Erosion is a natural process that occurs when rocks are weathered, or broken down, by physical and chemical forces. These forces can include water, wind, ice, and gravity.
For example, when water flows over rocks in a river, it can cause them to become smooth and rounded over time. This is because the force of the water can break off small pieces of the rock and carry them away.