I think you mean autotroph? An autotroph is an organism that makes it's own food, like plants and some single-celled organisms.
Answer:
prey and predator
Explanation:
The predator-prey relationship is one of the most common examples of coevolution. In this regard, the predator have adaptations that enable them to capture and feed on their prey. These include many have sharp claws and canine teeth, many are able to run fast and many have a body colour which matches that of the surroundings. There is an increased prey on the prey to avoid being captured by the predator and thus evolved traits to help them camouflage better.
Electrical energy is energy derived from electric potential energy or kinetic energy. So D would be the best answer
