| A | B |
|---|
| Ecosystem | all the living and nonliving things in an area and their interactions |
| Symbiosis | a long-term relationship between two different organisms |
| Abiotic factor | a nonliving part of an ecosystem |
| Biotic factor | a living part of an ecosystem |
| Population | all the members of one species in an area |
| Community | all the populations living in an area |
| Habitat | a place that provides all the things an organism needs to live |
| Niche | the role an organism has in its ecosystem |
| Producers | organisms that produce their own energy |
| Consumer | any animal that eats plants or other plant-eating animals |
| Decomposer | fungi or bacteria that break down wastes and dead organisms for energy |
| Food chain | the path of the energy in food from one organism to another |
| Food web | the overlapping food chains in an ecosystem |
| Predator | a living thing that hunts other living things for food |
| Prey | a living thing that is hunted for food |
| Scavenger | a meat-eating animal that feeds on the remains of dead animals |
| Herbivore | a plant-eating animal |
| Carnivore | a meat-eating animal |
| Omnivore | an animal that eats plants & meat |
