Across
- 4. The part of the experiment that is kept the same
- 6. The variable that is changed in an experiment
- 9. The first level of a food chain, usually plants
- 11. The process plants use to make food
- 14. An environment where plants and animals live in harmony The part of the experiment that is kept the same
- 16. Something that cannot dissolve in water
- 17. Organisms that break down dead matter
Down
- 1. The force that pulls objects toward each other
- 2. A series of interconnected food chains
- 3. A type of energy stored in food
- 4. Organisms that eat meat
- 5. The things that is measured in an experiment
- 7. An educated guess or prediction
- 8. The tool used to measure temperature
- 10. Something that can dissolve in water
- 12. The top predator in a food chain
- 13. A scientist who studies the stars
- 15. Organisms that eat plants and meat