| A | B |
| Carnivore | An animal that eats only other animals |
| Consumer | An organism that obtains energy by feeding on other organisms |
| Decomposer | An organism that breaks down large chemicals from dead organisms into small chemicals and returns important materials to the soil and water |
| Energy Pyramid | A diagram that shows the amount of energy that moves from one feeding level to another in a food web |
| Food Chain | A series of events in which one organism eats another |
| Food Web | The pattern of overlapping food chains in an ecosystem |
| Herbivore | An animal that eats only plants |
| Omnivore | An animal that eats both plants and animals |
| Producer | An organism that can make its own food |
| Scavenger | A carnivore that feeds on the bodies of dead organisms |