Agricultural Revolution (15)

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Across
  1. 4. to feed on growing plants, such as grass
  2. 5. land held to be used by everyone
  3. 7. unproductive, inadequate in performance
  4. 9. animal food
  5. 11. a supply of workers
  6. 13. new inventions; the science of industry
  7. 15. an economy based on industry, not agriculture
Down
  1. 1. a group of animals distinguished by particular characteristics
  2. 2. animal droppings used to fertilize land
  3. 3. to sow seeds by throwing them over a field by hand
  4. 6. colonizing power
  5. 8. the essential materials needed in an industry to make a product
  6. 10. to use
  7. 12. a layer of gas protecting humans from the sun's harmful rays
  8. 14. money used in invest in business