Across
- 2. – The basic building block of living things
- 6. – Harmful substances in the environment
- 7. – When a liquid turns into a gas
- 8. – The gas we breathe to stay alive
- 10. – It attracts iron and steel
- 12. – What your body does to break down food
- 16. – A living thing that makes its own food using sunlight
- 17. – Powers your lights and gadgets
- 18. – A push or a pull
Down
- 1. – Evidence of ancient plants or animals found in rocks
- 2. – A path for electricity to flow
- 3. – The place where an organism lives
- 4. – Needed to make things move or work
- 5. – A natural object that orbits a planet
- 6. – A nutrient used for growth and repair
- 9. – A force that slows things down
- 11. – A force that pulls objects toward the Earth
- 13. – A liquid that dissolves substances
- 14. – A substance with a pH less than 7
- 15. – The smallest part of an element