Across
- 3. Structure made of tissues
- 4. Increase in size or number of cells
- 6. Change in populations over time
- 8. Condition that distinguishes living things from nonliving matter
- 9. Group of organs working together
- 10. Basic unit of life
- 11. Group of similar cells performing a function
- 12. Sum of all chemical reactions in an organism
- 15. Production of offspring
- 16. Study of living organisms
Down
- 1. Maintenance of internal stability
- 2. Trait improving survival
- 5. Changes occurring during an organism's life
- 7. Environmental change causing a response
- 13. Individual living thing
- 14. Reaction to a stimulus