Across
- 1. what is the structure of silica
- 5. over 80% of the earth's ________is made up of oxygen and silicon
- 7. what does som stand for
- 9. a vital heterogenous mix vital for the earth
- 11. what kind of plants replace nutrients
- 12. bacteria and fungi convert organic matter into a what kind of mixture
- 13. salinization reduces plant __________
- 14. what does inorganic material contain most of
- 15. released along with nitrogen during the process of mineralization
Down
- 2. overuse of nitrate and phosphate fertilizers can lead to this
- 3. the largest component of soil
- 4. these get absorbed from the soil by plant roots
- 6. soil is a _______ mix
- 7. this is the accumulation of water soluble ions or salts in soil
- 8. process of breaking down a substance to release nitrogen
- 10. what contains about half it's mass as carbon and five percent as nitrogen