Crosword Puzzle!!!!

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Across
  1. 3. make sure
  2. 4. when you set up an organisation
  3. 6. many ships
  4. 7. the person who discovered something
  5. 9. when you sell something you .........
  6. 10. a person who left his/her country due to financial reasons
  7. 11. this number shows how much high this is structure above the sea
Down
  1. 1. another word for issue
  2. 2. ships go there to stay
  3. 4. calculate
  4. 5. this person uploads only quality .......
  5. 8. it is about farming