Across
- 1. an organism made of only one cell
- 4. an organism whose cells contain a nucleus
- 9. a reaction to a change in the environment
- 10. a living thing
- 11. an organism that cannot create their own energy
- 14. becoming more complex over time
- 15. a change in the environment
- 16. adjusting to better match the environment
- 17. the building blocks of life
Down
- 2. an organism that can create its own energy
- 3. reproduction with two parents
- 5. reproduction with one parent
- 6. a change in a species over a long period of time
- 7. becoming larger over time
- 8. an organism made of two or more cells
- 12. an organism whose cells do not contain a nucleus
- 13. maintaining stable internal conditions