Across
- 4. reaction to a stimulus
- 8. living things display
- 9. a group of organisms that can breed with each other
- 10. anything that is part of the environment
Down
- 1. the science of life
- 2. addition of mass
- 3. production of life
- 5. any inherited characteristic that results from changes
- 6. process of natural changes
- 7. anything that has the characteristics of life