Weathering and Erosion Crossword

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