| A | B |
|---|
| Population | All animals of one species that live in an area. |
| Community | All the populations of all the organisms that live in an area. |
| Producers | Organisms that use an outside energy source like the Sun to make energy. |
| Consumers | Organisms that get energy by eating other organisms. |
| Herbivore | Type of consumer that eats only plants. |
| Carnivore | Type of consumer that only eats animals. |
| Omnivore | Type of consumer that eats both plants and animals. |
| Decomposer | Type of consumer that eats carrion, or dead organisms. |
| Food Chain | Simple model of energy flow in an ecosystem. |
| Symbiosis | Any close relationship between two species. |
| Mutualism | A symbiotic relationship in which both species benefit. |
| Commensalism | Symbiotic relationship in which one species benefits and the other is unaffected. |
| Parasitism | Symbiotic relationship in which one species benefits and the other is hurt or harmed. |
| Niche | An organisms role in the environment |
| Predators | Consumers that capture and eat other consumers. |
| Prey | An organism that is captured by a predator. |
