Answer:
Fungus
Explanation:
Some fungus feed on living waste.
Answer:
A. Coal
Explanation:
The other forms listed are "clean" energy sources.
Okay, let's see...
In the center, we have the inner core, then the outer core, and then the slow moving mantle. On the outside, we have the crust a.k.a. where we live. =]
I believe the answer is the location of energy sources