The Kontiki part 6 words

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Across
  1. 3. National ______ magazine
  2. 5. he sees a bird
  3. 9. country that Thor is from
  4. 11. a bird that lives on land but looks for food in ocean
  5. 13. Torstein sees this
  6. 14. adjective form of danger
  7. 15. present progressive form of brush
  8. 17. Thor’s wife
Down
  1. 1. plural form of tooth
  2. 2. Knut and Torstein want to have a _____ in Polynesia
  3. 4. noun form of measure
  4. 6. past tense of hear
  5. 7. a trip
  6. 8. superlative form of big
  7. 9. ______ Geographic magazine
  8. 10. plural form of rock
  9. 12. seeing a bird means that _____ is near
  10. 16. sharp, dangerous rocks under the water