| A | B |
|---|
| interact | when plants and animals affect one another or the environment to meet their needs |
| producer | a living thing that makes its own food |
| consumer | a living thing that eats other living things as food |
| decomposer | a living thing that breaks down dead organisms for food |
| food chain | the path of food from one living thing to another |
| energy pyramid | a diagram that shows that the amount of usable energy in an ecosystem is less for each higher animal in the food chain |
| food web | a model that shows how food chains overlap |
| predator | an animal that hunts another animal for food |
| prey | an animal that is hunted by a predator |
