Soil Minerals

3. voids or openings in the soil that exist between soil particles and soil peds or clods
4. the mineral and organic surface of the earth, capable of supporting upland plants
6. microscopic, wormlike, transparent organisms that can attack plant roots or stems to cause stunted or unhealthy growth
8. a unit of soil structure such as an aggregate, crumb, prism, black of granule, formed by natural processes
9. the removal of soluble parts from soils or other materials by percolating water
10. a layer of soil, parallel to the surface, having distinct characteristics produced by soil-forming processes
11. any vegetation that grows close to the ground, producing protection for the soil
14. matter found in or produced by living animals and plants, which contains carbon, hydrogen, oxygen, and often nitrogen and sulfur

1. a vertical section of a soil, exposure made by a cut
2. the different sizes of various groups of individual soil grains
4. particles that are finer than gravel but coarser than silt, 2.00 - 0.5 mm in size
5. the arrangement of primary soil particles into compound particles or aggregates that are separated from adjoining aggregates
7. medium soil particle size, contains 80% or more of silt and less than 12% of clay
8. the relative degree of downward movement of water in soil
12. soil that consists of less than 52% sand, 28 to 50% silt and 7 to 27% clay, resulting in a soil texture ideal for gardening
13. particle size of less that 2 microns, very sticky