Early people-Crossword puzzle

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Across
  1. 5. A community of people who share common culture.
  2. 7. Strip of land conecting two continents.
  3. 8. The first part of the Stone age.
  4. 10. New Stone Age.
  5. 14. A relative who lived in the past.
  6. 15. Historic time periods.
Down
  1. 1. Move to different places.
  2. 2. People who hunt animals and gather wild plants,seed,fruits and nuts to survive.
  3. 3. Huge stones used as monuments or as the sites for religious gatherings.
  4. 4. freezing times.
  5. 6. The process of changing plants or animals to make them more usefull for humans.
  6. 9. An early ancestor of modern-day humans.
  7. 11. Any handheld object that has been modified to help a person acomplish a task.
  8. 12. The Middle Stone Age.
  9. 13. The domestication of plants led to the development of..