The natural process responsible for the rock cycle involves the continuous transformation of rock types through various geological processes, including erosion, sedimentation, and metamorphism. The rock cycle demonstrates how igneous, sedimentary, and metamorphic rocks can be transformed into one another under varying conditions of temperature, pressure, and time. This cycle is essential in understanding the dynamics of Earth's geology, as it illustrates how rocks are formed, broken down, and reformed continuously, impacting landscapes and ecosystems over geological time.