first humans and first farmers crossword puzzle

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Across
  1. 5. a wooden beam that is put over the necks of two animals and is attached to a plow or cart
  2. 8. an item used for a particular function
  3. 9. the use or supply of water to help grow crops
  4. 10. the science or practice of farming
  5. 11. a large elephant that is extinct
  6. 12. all the inhabitants or people in an area
Down
  1. 1. people who hunt and gather for food
  2. 2. the stage of human cultural development
  3. 3. the process of taming an animal
  4. 4. a glacial period of reduction in temperature of earth
  5. 6. people who move from place to place
  6. 7. combustion or burning which gives out light, heat, and smoke