Answer:
So, energy is really all one big circle. Think of it like this:
When an organism dies, it's body is always inevitably taken back by the earth. For the purpose of the example, we'll use one specific scavenger as the main contributor here. When the body soaks back into the soil, the nutrients act as a fertilizer and aid in the growth of a patch of grass, that grass is eaten by a grasshopper, then, a frog comes along and is eaten by a snake, and eventually, that snake is eaten by an eagle. Let's say that eagle dies of natural causes, and once it passes away, the earth reclaims it's body. Now, we have a whole new fresh patch of grass and the cycle continues on, and on, and on. In this way, all energy is made eternal through the cycle of life and the food chain.
