unit 8

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Across
  1. 3. Agriculture undertaken to generate products to sell off farm
  2. 7. term for cowboy
  3. 9. An engine powered by the wind designed to produce energy from an inexhaustible source
  4. 10. Movement of people from rural areas to cities
  5. 12. a large farm for raising horses, beef cattle, or sheep
  6. 13. The application of scientific knowledge for practical purposes
Down
  1. 1. An improvement of something that already exists
  2. 2. the spatial distribution of where humans live on Earth
  3. 4. a sudden rush of animals or people, usually caused by fear
  4. 5. a type of cloth or woven fabric
  5. 6. strong wire with spikes used to prevento passage
  6. 8. Supplying land with water through a network of tunnels
  7. 11. formal agreement between the governments of two or more countries