SOIL FORMATION AND POLLUTION

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Across
  1. 1. Soil layer that contains very little humus and plant root can reach this area
  2. 3. The process of weathering involves carbonate minerals in rock
  3. 6. Oxygen, water and pyrite react to form _____
  4. 8. Formation process of soil from rock
  5. 9. ___ is the ability of soil to sustain plant growth and optimize crop yield
  6. 10. During mining,_____ is exposed to oxygen
Down
  1. 2. affect reproductive pattern of aquatic organisms
  2. 4. Aquatic animals and plants are killed by the ____
  3. 5. Increased in soluble metal concentration and particulate metal in water
  4. 7. This soil is a combination of sand, silt and clay