| A | B |
| Parasitism | A symbiotic relationship in which one organism benefits and the other is harmed |
| Predation (predator/prey) | An interaction in which one organism kills and eats another |
| Community | All the different populations that live together in a an area |
| Energy pyramid | A diagram that shows the amount of energy that moves from one feeding level to another in a food web |
| Ecology | The study of how things interact with each other and with their environment |
| Niche | An organism’s particular role, or how it makes its living |
| Abiotic factors | The nonliving parts of an ecosystem |
| Food Web | The many overlapping food chains in an ecosystem |
| Commensalism | A symbiotic relationship in which one organism benefits while the other organism is unaffected or unharmed |
| Producer | An organism that can make its own food |
| Omnivores | Consumers that eat both plants and animals |
| Habitat | The place where an organism lives and that provides the things the organism needs |
| Mutualism | A symbiotic relationship in which BOTH organisms benefit |
| Competition | The struggle between organisms to survive in a habitat with limited resources |
| Adaptations | The behaviors and physical characteristics of species that allow them to live successfully in their environment |
| Scavengers | These feed on the bodies of dead organisms (ex:vultures) |
| Decomposer | organisms that break down wastes and dead organisms |
| Carnivore | consumers that eat only meat |
| Herbivore | consumers that eat only plants |
| Biotic factors | the living parts of an ecosystem |