Digging up the past vocabulary

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Across
  1. 2. to move from one area to another
  2. 6. long period of time before people developed systems of writing and a written language
  3. 9. to gather
  4. 11. the study of the ways of life of early people through things they left behind
  5. 12. surface features such as a valley or hill
  6. 13. average weather conditions over time
  7. 17. huge ice sheet covering a stretch of land
  8. 18. formed when work was divided up among villagers(2 words)
  9. 20. the technology, customs, beliefs, and art of a people
Down
  1. 1. way in which humans produce the items they use
  2. 3. to tame wild animals and plants
  3. 4. object made by people long ago
  4. 5. one who carefully uncovers evidence from the past
  5. 7. place where archaeologists dig up artifacts (2 words)
  6. 8. the study of the relationship between physical features, climate, and people
  7. 10. a person who travels from place to place
  8. 14. extra supply
  9. 15. the raising of plants and animals
  10. 16. ____ dating method used to estimate age after something dies
  11. 19. different