WED

1. average concentration of a element in earths crust
4. breakdown of rocks by chemical reactions, and chemical elements from rocks, and minerals
7. least weathered soil horizon, that always occurs beneath B Horizon and is similar to parent material
8. mostly decomposed matter in lowest section of the O Horizon
11. frequently top layer of soil, a zone of organic material and minerals that were mixed together
12. accumulation of minerals from economically valuable
15. mechanical breakdown of rocks
21. Loss of some or all soils ability to support plant growth
22. precipitation of high sulfuric acid and nitric acid
23. zone of leaching or eluviation in some acidic soils
24. the process of looking for minerals, metals, and precious stones.

2. Soil horizon composed primarly of mineral material with very little orgainic matter
3. resource management, a known quantity of a resource that can be recovered
5. horizontal layer of soil defined by distinctive physical features like texture and color
6. Mining technique used when the desired resource is below 328 feet.
9. a technique that removes the entire top of a mountain with explosives.
10. Proportion of soil acids, expressed as a precentage
12. A mining technique that creates a large visible hole.
13. underlying rock material from which inorganic components of the soil are derived
14. the removal of strips of soil and rock to expose ore
16. physical removal of rock fragments from landscape or ecosystem
17. element with properties that allow it to conduct electricity and heat
18. organic horizon at the surface of many soils composed of organic detritus in various stages of decomposing
19. Unwanted waste created during mining including minerals and other residues left behind after mining.
20. ability of a particular to absorb and release cations