Answer: Uniformitarianism
Uniformitarianism is the principle which states, Geologic process taking place on Earth today operated similarly in the past and can be used to explain past geologic events.
Step-by-step explanation:
Uniformitarianism is also defined or has a theory of changing in the earth crust which occurs during the geological history.
These section of series is the conclusion of the action of continuous procedure. The concept for the term Uniformitarianism states, The present is the key to the Past.