Across
- 1. the study of how all living things depend upon one another
- 5. the amount of time an organism is likely to live
- 6. a living thing
- 9. the study of organisms and functions too small to see with the naked eye
- 10. to make more of one's kind
- 11. to act in return or in answer to something
- 12. the scientific study of plants
- 13. the study of how life characteristics are passed to offspring
Down
- 2. the quality or feature of a person or thing
- 3. the scientific study of animals
- 4. the leftover matter a cell or body does not need
- 7. all the things around you
- 8. the science that studies life