E7 Soil

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Across
  1. 2. water insoluble mixture made from organic matter by bacteria and fungi
  2. 4. what type of pollutant is generated from pesticides and herbicides
  3. 5. use in coolant and insulator in electrical equipment such as generators
  4. 6. when the quality of the soil has been affected in some way
  5. 7. common organic soil pollutant from bactericides and fungicides
  6. 10. decreased soil quality and can lead to a serious decline in the yield of crops
  7. 12. caused by industrial discharge and improper dumping of toxic waste material
  8. 13. what is the shape of silicon(IV) oxide
  9. 14. is added in desserts to improve plant growth
Down
  1. 1. caused by excess nutrients from phosphates and nitrates
  2. 3. has active sites that enable it to bind to nutrient cations
  3. 8. process in which nitrogen and phosphorus is broken down to roots
  4. 9. what does SOM stand for?
  5. 11. what is in the synthesis of proteins and chlorophyll
  6. 12. caused by constant or excess irrigation