Tom's Natural Resources Unit

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Across
  1. 3. only ____ of that is fresh water.
  2. 5. ___ of the earth is covered in water.
  3. 6. to grow crops, there should be at least 500mm of total precipitation for the year. less and it is too dry for agriculture.
  4. 8. ___ of that fresh water is locked up in ice.
  5. 11. some organisms such as earth worms, are highly beneficial to farming.
  6. 12. humus is the most important factor determining a _____ fertility.
  7. 16. resources that are limited and cannot be replaced once they are used up.
  8. 19. have needles, which remain year round. they also have cones.
  9. 20. level (flat and horizontal), well-drained land is generally best for farming.
  10. 22. resources that can be regenerated if used carefully.
Down
  1. 1. the item is taken to a landfill or burned in an incinerator.
  2. 2. less than __ of the worlds fresh water is available for direct human use.
  3. 3. canada has ___ of the worlds fresh water.
  4. 4. how much was newfoundlands cod fishery worth in 1992?
  5. 7. the item is destroyed when you no longer want it, but the material in the item is recovered for reuse. resource savings: some
  6. 9. the growing season and moisture are the two _______ variables that contribute most to the success of farming.
  7. 10. the _____________ is the number of days during which crops can ripen.
  8. 13. resources that do not fit into the other three categories.
  9. 14. fewer items are produced. resource savings: most
  10. 15. have broad leaves, which change colour in Autumn and fall down.
  11. 17. things found in the total stock that people find useful.
  12. 18. the item is used by someone else when you no longer want it. resource savings: more.
  13. 21. resources that are replaced by natural actions and must be used when and where they occur or be lost.