Soil and Soil Formation

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Across
  1. 4. the largest grained soil particle
  2. 5. the primary rock that forms the soil
  3. 9. decomposing plants and/or animals
Down
  1. 1. the breaking down of rocks and minerals
  2. 2. the weather conditions in an area-averaged over many years
  3. 3. the type of material that make up soil is referred to as its______________
  4. 4. a soil particle you can feel but not see
  5. 6. a soil type made of roughly equal parts sand, silt, and clay
  6. 7. a layer of soil
  7. 8. a thin layer of material on the Earth's crust
  8. 10. the smallest grained soil particles