| A | B |
| ecology | The study of the interactions of organisms and their environment. |
| biosphere | the life supporting zones on the earth near the surface. |
| abiotic | nonliving things |
| biotic | living things |
| abiotic factors | nonliving things in an environment |
| biotic factors | living things in a environment. |
| ecosystem | an area in which living and nonliving things interact with their environment. |
| biology | the study of living things |
| community | two or more groups that live together and interact with each other in the same area. |
| populations | all the organisms of the same species that live in a certain place. |
| habitat | the area in which an organism lives in an ecosystem. |
| niche | a specifice role an organism has in its habitat. |
| rock,water, air | abiotic factors |
| plants and animals | biotic factors |
| adaptations | characteristics that help an organism survive in its ecosystem. |
| sampling | the process of countins a sample of a population in order to determine the entire population. |
| balanced ecosystem | is an ecosystem in which all living and nonliving things are interacting successfully. |
| terrarium | an example of a man made ecosystem. |
| wetlands | swamps |