Soil Erosion

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Across
  1. 3. Air, sunlight, water and soil are all necessary for ________
  2. 6. is the extremely slow movement of soil down a steep hillside.
  3. 9. process of the gradual destruction or diminution of something eroding or being eroded by wind, water, or other natural agents
  4. 11. is a mass movement that happens when a large section of soil or soft rock breaks away from a slope and slides downwards.
  5. 12. is a mudflow of water mixed with volcanic ash.
Down
  1. 1. plants grown in a row to facilitate harvesting and water
  2. 2. is a process that breaks down rocks by the effects of weather
  3. 4. Animals and _______live in soil.
  4. 5. Nitrogen,calcium,magnesium,potassium are four ________ we get from soil.
  5. 7. small ditches, usually 2-6 inches deep, between the rows of plants used to convey water
  6. 8. is the top layer of Soil on the earth.
  7. 10. a covering placed on bare soil to keep it from eroding