| A | B |
|---|
| Ecosystem | All the living and nonliving thing that interact in a particular area. |
| Habitat | The place where an organism lives and that provides the things the organism needs. |
| Biotic Factors | The living parts of an ecosystem. |
| Abiotic Factors | The non living parts of an ecosystem. |
| Photosynthesis | The process in which organisms use water along with sunlight and carbon dioxide to make food. |
| Population | All the members of one species in a particular area. |
| Species | A group of organisms that are physically similar and can reproduce with each other to produce fertile offspring. |
| Community | All the different populations that live together in an area. |
| Single organism | The smallest unit of organization an ecosystem. |
| Ecology | The study of how living things interact with each other and with their environment. |
| Ecologist | A scientist who studies the biotic and abiotic factors in an ecosystem are related. |
