E7 SOIL

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Across
  1. 2. chemical used to kill unwanted fungi
  2. 5. the organic matter containing nitrogen and phosphorus is broken down
  3. 8. the excess growth of aquatic life such as algal blooms
  4. 9. chemicals used to kill plants and weeds
  5. 12. affects soil thermal properties by influencing soil temperature.
  6. 13. Inorganic matter, water, air and smaller amounts of organic matter are the main components of?
  7. 14. according to the UN, about 10% of the world's irrigated land has been damaged by _ _ _ _.
  8. 15. the mixture of non-living organic components present in soil
Down
  1. 1. The removal of essential nutrients and minerals from the soil
  2. 3. Typical organic matter contains how much nitrogen percentage?
  3. 4. chemical used to kill insect pests
  4. 6. Soil with higher water content experiences _ _ _ _ _ _ _ temperature changes.
  5. 7. the accumulation of water soluble ions or salts in the soil due to continual irrigation of grow crops
  6. 10. organic matter added to sand to improve plant growth
  7. 11. What reduces soil erosion and increases the ability of air and water to move through the soil?