Across
- 3. natural source of nitrogen
- 6. original rock that forms soil
- 10. alive or was once alive
- 13. decomposed organic matter
- 15. nutrient for flowering
- 16. nutrient for plant growth
- 17. larger than sand
- 18. broken up pieces of rock
- 19. trash-to-________
Down
- 1. layer of soil
- 2. ______fill
- 4. where some trash is dumped
- 5. to make some trash into something else
- 7. open hole in the ground
- 8. organic mater in soil
- 9. layer that contains humus
- 11. aka trash or garbage
- 12. smallest soil particle
- 14. nutrient for health
- 15. banana ______
- 19. dirt with humus