Soil and Rock Crossword Puzzle

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Across
  1. 4. The measure of how many bases there are in the soil represented in a percentage.
  2. 6. A mineral deposit containing one or more minerals
  3. 8. Below A and E horizon and contains clay
  4. 12. The gradual wear and tear of the earths surface due to natural forces
  5. 13. The average concentration of an element in the earth’s crust
  6. 15. A measure of the total negative charges within a soil that can absorb plant nutrient cations
  7. 16. The process that breaks rocks apart without changing their chemical composition
  8. 17. A layer Parallel to the surface soil
Down
  1. 1. A mineral Horizon with weathered bedrock
  2. 2. A naturally occurring solid chemical element or inorganic compound.
  3. 3. The rock or mineral the soil is made from
  4. 5. A dark top-layer of the soil
  5. 7. A horizon that contains leached minerals and organic matter
  6. 9. The erosion and/or breakup of rocks through chemical processes
  7. 10. This occurs when rain has a Ph of less than 5.6 due to pollutants mixing with clouds
  8. 11. The Physical, chemical and biological decline in soil quality
  9. 14. Resources that have been identified and from which a usable mineral can be extracted profitably