Across
- 4. organisms wit cells that contain nuclei
- 6. how organisms are classified
- 9. an make their own food
- 11. involves two parents
- 14. causes the organism to react
- 15. one cell
- 16. stable internal conditions
- 18. action or change in behavior
- 19. builds up or breaks down material
Down
- 1. structure and function in an organism
- 2. can't make there own food
- 3. closely related organisms
- 5. grouping things based on similarities
- 7. many cells
- 8. group of similar organisms
- 10. unicellular organism whose cells lack nucleus
- 12. process of change in an organisms life
- 13. dense area in cell
- 17. living thing