Guess What I am?

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Across
  1. 5. rich in nutrients and minerals
  2. 7. the texture of sand
  3. 8. covers almost the land part of the earth
  4. 9. the largest particles of rocks
Down
  1. 1. humus comes from ________ materials
  2. 2. silt can be found near the _______.
  3. 3. contains decaying materials
  4. 4. sticky when wet and hard when dry
  5. 6. loam is good for ______ growth
  6. 9. smooth and fine in texture