| A | B |
| consumers | take food from their environment |
| producers | make their own food |
| decomposers | break down once living things |
| fungi and bacteria | decomposers |
| plants | producers |
| animals | consumers |
| trophic level | the position of an organism in a food chain |
| herbivores | primary or first level consumers |
| producer, herbivore, predator, top carnivore | order of trophic levels in a food chain |
| food chain | uses words and arrows to show flow of energy in an ecosystem |
| food web | shows patterns of energy flow in an ecosystem by using interconected food chains |
| energy pyramid | shows amount of energy that moves from one trophic level to another |
| decrease | what happens to availability of energy in an energy pyramid from top to bottom |
| producer level | where most energy is found in an energy pyramid |