Across
- 2. cycle is the movement of nutrients
- 4. Air...............does not recognise borders
- 6. The ………………………. describes who eats whom in the wild
- 9. there are ways to recycle our ................materials
- 12. the..........is in danger
- 14. One cubic meter of fertile …………contains one billion living organisms
- 15. ....is provided by the san
Down
- 1. We must protect the .................
- 3. Natural ......................don't last forever
- 5. are animals that feed on dead animals
- 7. Green vegetables have important ................
- 8. is the variety of life on Earth
- 10. It's time to ...................the way we treat the environment
- 11. We must ............................... our shopping plastic bags
- 13. Flowers use ………………to make seeds