Across
- 4. Decayed plant and food waste used to help plants grow.
- 6. The process of turning waste into new materials
- 7. The ability to remain unchanged or steady.
- 8. To break something down into smaller parts.
- 9. substance used to make things.
- 10. A substance in living things that speeds up chemical reactions.
- 13. place where trash is buried in the ground.
- 14. Harmful materials released into the air, water, or land.
- 15. Too small to be seen without a microscope.
Down
- 1. Able to remain stable at different temperatures.
- 2. system A process where materials are reused over and over with no waste.
- 3. A living thing
- 5. In a way that does not harm the environment or use up resources.
- 11. scientific test to learn how something works.
- 12. The smallest unit of a substance that still has the properties of that substance