Geography crossword

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Across
  1. 3. a name, literally a name
  2. 4. using resources in a way that allows for future generations to have the same level of resources available
  3. 7. when mercury increases up the food chain
  4. 9. a cool harbour that is in Australia
  5. 12. the humidity level of Sri Lanka most of the time
Down
  1. 1. a resident of Chad
  2. 2. a name that happens to start and end with b
  3. 5. ___ fences which defend from silt
  4. 6. ___ like a bic, all these...
  5. 8. a chad
  6. 10. a number of these make up an ecosystem?
  7. 11. a slang for homosexual