Jacob's Rockin' Crossword Puzzle

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Across
  1. 1. most plants germinate and grow roots in this layer
  2. 3. sometimes is called the R horizon, or regolith
  3. 4. scientists who study soil
  4. 7. the type of weathering that breaks rocks into smaller and smaller pieces
  5. 8. the largest kind of particle
  6. 10. the type of weathering that transforms rocks into new substances
Down
  1. 2. contains a few nutrients from the humus that has washed down through the upper layers of soil
  2. 5. people who enjoy exploring caves
  3. 6. the smallest kind of particle
  4. 9. the process of breaking down rocks