Soil

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Across
  1. 2. the chemical that contributes to the general health of plants and improves disease resistance
  2. 4. the study of soil
  3. 5. a way of explaining an object or event by using a set of facts
  4. 7. bacteria the bacteria that converts nitrates into atmospheric nitrogen
  5. 10. a sensible explanation to a scientific problem
  6. 13. upward movement of water through a tiny space in response to surface tension
  7. 14. soil that contains a range of sand, silt, clay and humus mixtures
  8. 15. a conclusion based on reasoning from evidence
Down
  1. 1. the chemical that stimulates rapid growth of leaves, giving plants a rich, green colour
  2. 2. scale the scale that chemists use to express the degree of acidity or basicity of a substance
  3. 3. method an organized way for scientists to gather and pursue scientific knowledge
  4. 6. bacteria the bacteria that converts elemental nitrogen to ammonia,nitrates,and other nitrogen compounds
  5. 8. the substance of the physical world
  6. 9. methodically testing hypothesis
  7. 11. the study of the matter and movement of God's physical creation
  8. 12. bacteria the bacteria that converts ammonia to nitrates