| A | B |
|---|
| ecology | the study of the interactions among living things, non-living things and their environment |
| biotic | living |
| abiotic | non-living |
| habitat | the place where an organism lives |
| population | a group of organisms of the same species |
| community | groups of different populations |
| ecosystem | interactions between populations in a community and the non-living things |
| succession | changes in a community over time |
| climax community | a community that changes LITTLE over time |
| acid rain | polluted rain that harms organisms |
| biome | an ecosystem found over a large geographic area |
| biosphere | part of the earth where living things can exist |
| producer | organisms that make their own food |
| consumer | organisms that feed on other organisms |
| food chain | feeding order of organisms |
| food web | all the food chains in a community |
| decomposer | organism that breaks down dead organisms |
| interact | to act upon or with something |
| carrying capacity | the number of organisms of the same species that lives in the same area |
| pollution | anything added to the environment that is harmful to living things |
| threatened | there are fewer of a species of animal than there used to be |
| endangered | there are almost no animals left of a certain species |
| resource | a thing that an organism uses to live |
| extinct | all the members of a species are dead |
| renewable resource | resources that are replenished by nature |
| nonrenewable resource | resources that cannot be replaced |
| fossil fuels | fules formed millions of years ago from the remains of plants and animals |
