Final answer:
Rocks can change over time through the process of the rock cycle, involving the transformation from one type to another.
Step-by-step explanation:
Rocks can change over time through the process of the rock cycle. The rock cycle involves the transformation of rocks from one type to another. For example, melted rock deep within the Earth can solidify to form igneous rocks. These rocks can then be exposed to weathering and erosion, which can break them down into sediment. Over time, this sediment can be compacted and cemented to form sedimentary rocks. If these rocks are then subjected to heat and pressure, they can undergo metamorphism and become metamorphic rocks.