The part of DNA that makes up the “rungs” of the ladder-like structure; the four bases found in DNA are adenine (A), thymine (T), guanine (G), and cytosine (C)

Plants take energy from the sunlight with the of chlorophyll so the plant starts the food chain. then an herbivore eats the plant and gets its energy.then a carnivore or a human eats the herbivore and gets its energy. : )