Across
- 5. – A device that removes dirt or unwanted things from water or air.
- 8. – Related to very tiny living things, like bacteria.
- 13. – Created using natural life processes, not machines.
- 14. – Simple in design, with few extra parts or decorations.
- 15. – Harmful substances that dirty the air, water, or land.
- 16. – Strong and lasts a long time.
Down
- 1. – The total amount of carbon dioxide a person or product creates
- 2. – A substance used in factories and science, often harmful to nature.
- 3. - consisting or made completely of plants, or mainly of plants
- 4. – Made again using old or used materials.
- 6. - using new ideas or methods
- 7. – Dirty air you often see in big, crowded cities.
- 9. – Made dirty or unsafe to use or eat.
- 10. – Paper and office tools like pens, pencils, and notebooks.
- 11. – Gases released into the air, often from cars or factories.
- 12. - Something that can be continued without harming the planet