Across
- 1. The invisible gas we breathe
- 4. The natural world around us
- 10. Cutting down lots of trees
- 11. Turn used things into new things
- 12. Dirt that plants grow in
- 13. Old food or plant parts that turn into healthy soil
- 15. A community of living and nonliving things working together
- 16. A place where trash is buried
- 17. The home of a plant or animal
Down
- 2. Something that can grow back or be reused (like trees or solar energy)
- 3. Use less of something
- 5. Use something again instead of throwing it away
- 6. Variety of life in one place
- 7. Harmful things in air, water, or land
- 8. A vital natural resource for all life
- 9. Something that can run out (like oil or coal)
- 14. Light and heat from the sun