people and places

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Across
  1. 5. it can't produce anything
  2. 7. ....years. with no economic strength
  3. 9. very very hot
  4. 10. Chinese have these eyes
Down
  1. 1. it doesn't allow cold or heat to get into houses
  2. 2. due to harsh weather
  3. 3. soil,ground
  4. 4. Northeners have pale...,whereas Africans have dark
  5. 6. you change gradually
  6. 8. planes fly in high....