SOIL

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Across
  1. 4. some tree roots grow in this layer of soil
  2. 7. one of four materials that make soil
  3. 9. layer of soil with the most humus
  4. 10. layer beneath soil
Down
  1. 1. soil property caused by grain size
  2. 2. decayed matter in soil
  3. 3. type of soil with a soft, velvety texture
  4. 5. type of soil with the largest grains
  5. 6. soil property caused by minerals
  6. 8. one of four materials that make soil