click below
click below
Normal Size Small Size show me how
Bio CH30
Biology CH30 Populations and Communities
| Term | Definition |
|---|---|
| commensalism | the relationship in which two organisms live together, and one benefits while the other gets no benefit and is not harmed |
| community | all of the living things in an area that depend upon each other |
| emigration | the movement of animals out of an area |
| energy pyramid | a diagram that shows energy loss in the food chain |
| food chain | a pathway of energy and materials through a community |
| food web | food chains connected in a community |
| habitat | the place where a plant or animal lives |
| immigration | the movement of animals into a population |
| limiting factor | any condition that keeps the size of a population from increasing |
| niche | the job of the organism in the community |
| parasitism | a relationship between two organisms in which one is helped and the other is harmed |
| population | a group of living things of the same species that live in an area |
| predation | the predator-prey relationship |
| predator | an animal that hunts, kills, and eats another animal |
| prey | an animal that the predator kills and eats |
| primary consumer | animals that eat only plants |
| secondary consumer | animals that eat other animals |