| A | B |
|---|
| biosphere | part of the earth that has life |
| ecology | study of organisms and how they interact with the environment |
| abiotic factor | the environments nonliving physical features |
| biotic factor | living organisms in the environment |
| population | all members of a species in an area |
| community | populations of different species that interact |
| ecosystem | communities and their abiotic factors |
| limiting factor | biotic and abiotic factors that limit a population |
| carrying capacity | maximum size a population can grow |
| predation | one organism eating another |
| habitat | physical location of an organism |
| niche | role of an organism in an ecosystem |
| food chain | shows the flow of energy through organisms |
| food web | connected food chains |
| pioneer community | first community to inhabit a new environment |
| climax community | final stage of a community's ecological succession. Stable |
| biome | areas that have similar climates and ecosystems |
| ecological succession | gradual change from one community of organisms to another |
