Answer:
1: This process happens because the physical processes on earth create a more constant change
2: Potential to kinetic energy is the force behind all the wind and water movement leading to erosion and weathering
3: It takes a few years to cause noticeable change, though change Earth's surface much more quickly.
4: Some examples of this nature can be wind and ice erode shape the land. Volcanic activity and earthquakes change the landscape in a often violent manner.
I hope I kinda helped
