| A | B |
| Definition of biotic | living and once living parts of an ecosystem |
| Definition of abiotic | nonliving parts of an ecosystem |
| Examples of biotic things | animals, plants, dead organisms |
| Examples of abiotic things | rocks, air, sand, temperature |
| The four main systems earth is divided into: | Geosphere, atmosphere, hydrosphere, biosphere |
| definition of a habitat | the place an organism lives |
| definition of a niche | an organism's role in the ecosystem |
| Organism | one individual living thing |
| Species | a group of organisms that are closely related and that can mate to produce fertile offspring |
| Population | all the members of the same species that live in the same place at the same time |
| Community | a group of various species that live in the same place & interact with each other |
| Ecosystem | all the living and nonliving things in an area that interact with each other |
| What are the 7 levels of scientific classification? | Kingdom, Phylum, Class, Order Family, Genus, Species |