| __ | 1. | Autrotroph | | A. | Distribution of organisms in habitats |
| __ | 2. | Biomagnification | | B. | Organisms that use photosynthesis to make their own food |
| __ | 3. | Community | | C. | Increasing concentration of a chemical in tissues |
| __ | 4. | Decomposer | | D. | No. of individuals of one species in an area |
| __ | 5. | Heterotroph | | E. | A different organisms living and interacting together |
| __ | 6. | Population | | F. | “Self-feeders” – do not feed on other organisms |
| __ | 7. | Producer | | G. | A straight line along which measures a habitat |
| __ | 8. | Quadrat | | H. | Tool used for sampling an area to determine no. of organisms |
| __ | 9. | Transect | | I. | Organisms that break down dead and decaying matter |
| __ | 10. | Zonation | | J. | An organism that cannot manufacture own nutrients |
| __ | 11. | Abiotic | | A. | The role or function of an organism in an ecosystem. |
| __ | 12. | Biotic | | B. | Interaction between two different organisms living together |
| __ | 13. | Ecology | | C. | Diagram that shows what organisms eat. |
| __ | 14. | Ecosystem | | D. | The place in which a particular organism lives |
| __ | 15. | Food chain | | E. | The living and non-living environment functioning together |
| __ | 16. | Habitat | | F. | Structure of a biological community changes over time |
| __ | 17. | Niche | | G. | Study of how organisms interact with other and environment |
| __ | 18. | Succession | | H. | Factors that describe the living things in an ecosystem |
| __ | 19. | Symbiosis | | I. | Factors that describe the non-living things in an ecosystem |