B4 e-h Higher Revision

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Across
  1. 5. This element (mineral) is needed to make chlorophyll.
  2. 6. Nitrogen is found in the soil in this form.
  3. 7. These are chemicals that kill pests.
  4. 9. Using one species to control another species is called _________ control.
  5. 10. These organisms use enzymes externally to break down dead material.
  6. 11. This method of farming does not require soil.
  7. 13. Plants use this process to move minerals from areas of low concentration to high concentration.
  8. 14. Sugars are transported through a plant by what process?
  9. 16. This element (mineral) is needed to make DNA and cell membranes.
  10. 18. Removing all the water from food is called...?
  11. 19. This element (mineral) is needed to make enzymes involved in photosynthesis and respiration.
Down
  1. 1. Salting or sugaring food can kill bacteria by drawing water out of them by.....?
  2. 2. Nitrates are used to make ______ _____ in plants.
  3. 3. This method of farming involves keeping large numbers of animals inside and preventing them from moving.
  4. 4. These cells control the opening/closing of stomata
  5. 8. Water is transported through a plant by what process?
  6. 12. These organisms eat dead material.
  7. 15. This word describes cells that are full of water.
  8. 17. These are the holes on the underside of a leaf.