Across
- 3. compacted soil that contains some small weathered rocks
- 7. This is the bottom layer of soil (letter)
- 11. The first species to colonize a habitat
- 13. The process that forms soil over time
- 14. the breakdown of rocks
- 15. This organism produces acid that chemically weathers rocks
- 16. This is the surface layer of the soil (letter)
Down
- 1. The movement of sediment
- 2. A living component in an ecosystem
- 4. small particles of weathered rock
- 5. A nonliving component in an ecosystem
- 6. This is the layer of soil that plant roots grow
- 8. organisms that add nutrients to the soil
- 9. This is the most biodiverse ecosystem
- 10. A layer of mineral deposits that filter water through the soil
- 12. This is partially decayed organic material
- 13. This is the oldest layer of soil