APES Rocks and Such

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Across
  1. 6. precipitation high in sulfuric acid and nitric acid from reactions between water vaper, sulfur, and nitrogen oxides in the atmosphere
  2. 8. the breakdown of rocks and minerals by chemical reactions, the dissolving of chemical elements from rocks, or both.
  3. 11. a concentrated accumulation of minerals from which economically valuable materials can be extracted
  4. 12. a zone of leaching found in some acidic soils under the O Horizon, or less often, under the A horizon
  5. 13. a horizontal layer in a soil defined by distinctive physical features such as texture and color
  6. 16. the most fully decomposed organic matter lowest in the O horizon
  7. 17. the loss of some or all of a soils ability to support plant growth
  8. 19. the organic horizon at the surface of many soils, composed of organic detritus in various stages of decomp
  9. 20. unwanted waste material created during mining including mineral and other residues that are left behind after the desired metal or ore are removed
  10. 21. the proportion of soil bases to soil acids, expressed as a a percentage
  11. 23. a mining technique in which the entire top of a mountain is removed with explosives
  12. 24. the process of looking for minerals, metals, and precious stones in river sediments
Down
  1. 1. the average concentration of an element in Earth's crust
  2. 2. the underlying rock from which the inorganic components of soil are derived
  3. 3. frequently the top layer of soil
  4. 4. a mining technique that creates a large visible pit or hole in the ground
  5. 5. mining techniques used when the desired resource is more than 100 m below the surface of earth
  6. 7. the least weathered soil horizon
  7. 9. the ability of a particular soil to absorb and release cations
  8. 10. the physical removal of rock fragments from a landscape or ecosystem
  9. 14. the mechanical breakdown of rocks and minerals
  10. 15. The removal of strips of soil and rock to expose ore
  11. 18. a soil horizon composed primarily of mineral material with very little organic matter
  12. 22. an element with properties that allow it to conduct electricity and heat energy, and to perform other important functions