Across
- 5. Animals living in nature.
- 6. Big changes in the world's weather.
- 9. A large area with many trees.
- 11. Dirty or harmful things in air, water, or land.
- 12. Things we throw away or don't use.
- 15. To use materials again to make new things.
- 16. Oil that leaks into the ocean or land.
Down
- 1. Dirty air from fire or factories.
- 2. A place where garbage is put into the ground.
- 3. Everything around us - air, water, animals, and plants.
- 4. The invisible gas we breathe.
- 7. Animals or plants that may disappear soon.
- 8. Cutting down many trees.
- 10. A long line of water that moves through the land.
- 11. A material used for bags, bottles, and more.
- 13. A building where things are made.
- 14. Substances that can be natural or made by people.