Across
- 4. an object that is not made of cells
- 6. one or more celled organisms
- 8. the ability to get and use energy
- 9. in 1665, he was the first to describe cells
- 12. all living parts of an environment
- 15. a thin, flexible outside layer
- 16. the ability to maintain your body
- 19. creating a new member of a species
- 20. the building block of life
Down
- 1. two
- 2. one
- 3. genetic material
- 5. cells dividing so the organism gets bigger
- 7. reacting to stimuli
- 10. Populations of organisms changing over time
- 11. any living thing
- 13. the study of life
- 14. does not have a nuclear membrane
- 15. a tool used to increase the size of small objects
- 17. all non-living parts of an environment
- 18. having or relating to cells