plant science

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Across
  1. 1. a type of flowering plant
  2. 4. topsoil
  3. 6. the physcial process
  4. 8. formed by long-term weathering of rocks
  5. 9. under subsoil
  6. 12. a structure process used to study a test
  7. 13. specific soil conditions
  8. 16. upper most layer
  9. 18. practice that limits soil disturbing activities
  10. 20. growing materials
Down
  1. 2. the top most layer
  2. 3. material derived from decomposed matter
  3. 5. geological material (bedrock)
  4. 7. subsoil
  5. 10. release of carbon dioxide
  6. 11. a diagram used by scientists and gardeners
  7. 14. the relative proportions of mineral particles
  8. 15. aggregates of soil particles
  9. 17. attached to the stem
  10. 19. ideal garden soil a mixture of things