Across
- 1. observations
- 4. an instrument to weigh things
- 5. ecological system
- 7. an organism that hunts
- 8. Living thing in an ecosystem (cells)
- 15. Non living thing in an ecosystem
- 16. is a pure substance made of only one type of atom
- 18. the process for a plant to turn sunlight into food
- 19. subatomic particle found in the nucleus of every atom
- 20. an organism that gets hunted
Down
- 2. something with no natural predators
- 3. somebody who works in science
- 6. an instrument to hold usually liquid items
- 9. Living thing
- 10. the building blocks of life
- 11. ecosphere
- 12. powerhouse of the cell
- 13. deoxyribonucleic acid
- 14. a narrow tool used to measure and transfer precise volumes of liquid
- 17. the international unit of temperature