| A | B |
|---|
| ecology | The study of how living things and nonliving things interact. |
| abiotic factor | A nonliving part of an ecosystem. |
| community | All the living things in an ecosystem, together. |
| ecosystem | All the living and nonliving things in an evnironment, including their interactions with each other. |
| population | All the members of one species in an area. |
| niche | The role of an organism in an ecosystem. |
| habitat | The place where a plant or animal naturally lives and grows. |
| food chain | The path of energy in food from one organism to another. |
| parasitism | A relationship in which one organism lives in/on another organism and benefits, while the other is harmed. |
| prey | A living thing that is hunted for food. |
| commensalism | A relationship between two kinds of organisms that benefits one without harming the other. |
| carnivore | An animal that eats another animal. |
| predator | An animal that hunts other animals for food. |
| food web | The overlapping food chains in an ecosystem. |
| herbivore | An animal that eats plants, algae, and other producers |
| scavenger | A meat-eating animal that feeds on the remains of dead animals. |
| omnivore | An animal eats both plants and animals. |
| mutualism | A relationship between two kinds of organisms that benefits both. |
| symbiosis | A relationship between two kinds of organisms over time. |
| biotic factor | all living things in an ecosystem |
