According to the law of conservation, "Energy is not created, or destroyed, but can be changed from one form to another."

The energy we use is simply the conversion of other species. It has no specific sources. However, most of the energy we have used is the result of the Sun.

Looking at the representation above, it is clear that we need power. We get this energy from eating food, which is also derived from plants and animals. In fact, all animals, plants, fungi, viruses, bacteria, and other organisms need the energy to do all they can.