Answer:
Earth's crust is getting cracked which results in the formation of tectonic plates that constantly move, and there are constant formation and destruction of physical features.
phyExplanation:
The internal forces that influence the crust are coming from the layers below it. Mainly, it is the mantle layer from where the internal forces act on the crust, but it should not be forgotten that the inner core influences the outer core, and the outer core influences the mantle, thus all of them are connected.
The internal forces are manifested through high pressure and penetration of magma. These two influence the crust because of the convection currents which push up the molten material. They manage to break up the crust and form new tectonic plates, and the plates are in constant motion. Because of the constant motion of the plates, there is the constant formation of all sorts of physical features, ranging from hills and mountains to volcanoes and ocean basins, but they also contribute to the constant destruction of physical features at the subduction zones.