Soil

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Across
  1. 2. The ratio of empty space to solid matter in a material.
  2. 5. The types of matter and the relative amounts of each type that make up a material, mixture, or pure substance.
  3. 8. The ability of a material to let a fluid such as water enter or pass through it.
  4. 11. Rock that is the source of the sediment in a body of soil, or the original rock that undergoes change to become metamorphic rock.
  5. 12. The movement of water from the surface of the ground into the soil or into permeable rock.
Down
  1. 1. The top layer of soil, which contains a large amount of humus.
  2. 3. Decayed plant and animal matter in soil.
  3. 4. Layers of soil, each of which has characteristics that are different from the neighboring layers' characteristics.
  4. 6. To observe and check the quality of something.
  5. 7. The ability of soil to support plant growth.
  6. 9. A process that removes soil and rock from one location and transports it to a new location. Erosion often occurs by the movement of water, wind, or glaciers.
  7. 10. A loose mixture of sediment, organic material, water, and air.