Across
- 3. organisms getting more complex
- 7. all organisms do it
- 8. all living things organized into this
- 9. detect changes and respond to them
- 10. organisms must keep their body at a certain temperature
- 13. molecule carrying genetic code
- 14. composed of many cells
- 15. the chemical process of converting food to energy
- 16. organisms making offspring
- 20. organisms removing waste products from the body
- 21. taking in the materials that organisms need
Down
- 1. basic unit of life
- 2. stable internal environment
- 4. a living thing
- 5. composed of one cell
- 6. the study of living things
- 11. what you need to see a cell
- 12. parents making children
- 17. a change in an organism's environment
- 18. organisms getting bigger
- 19. what all organisms need to live