Final answer:
Energy cannot be created or destroyed, it can only be changed from one form to another. This is known as the Law of Conservation of Energy.
Step-by-step explanation:
The subject of this question is Physics.
Energy cannot be created or destroyed, it can only be changed from one form to another. This is known as the Law of Conservation of Energy. Energy is constantly changing and can be transferred between objects, but the total amount of energy in the universe remains constant.
Keywords: energy, created, destroyed, Law of Conservation of Energy, transferred