Across
- 2. Living parts of the environment
- 3. The smallest unit of matter.
- 7. A community and its nonliving environment.
- 9. One organism hunts and eats another.
- 12. One species benefits, the other is unaffected.
- 18. Nonliving parts of the environment.
- 19. A structure made of tissues with a specific function.
- 20. The molecule that carries genetic information.
- 21. The gradual change in species over time.
- 22. One species benefits, the other is harmed.
- 23. A large area with a specific climate and life forms.
- 24. A living thing.
- 26. Maintaining a stable internal environment.
- 27. The chemical reactions in a living organism that provide energy.
- 28. The smallest unit of life.
- 29. A large molecule like DNA or proteins.
Down
- 1. The place where an organism lives.
- 4. Two or more atoms bonded together.
- 5. A group of the same species in an area.
- 6. The process of creating new organisms.
- 8. Different populations living together.
- 10. A group of similar cells working together.
- 11. A specialized structure within a cell.
- 13. An organism’s role in its ecosystem.
- 14. Both species benefit.
- 15. Changes in the environment that organisms respond to.
- 16. The basic unit of life.
- 17. Organisms fight for resources.
- 25. All life and ecosystems on Earth.