Vocabulary: After Oil

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Across
  1. 3. Some kind of progress, often in technology
  2. 7. Use up your supply of something
  3. 11. An answer to a problem
  4. 12. Remove a things or substance from a place
  5. 14. Accepted by most people, as usual
  6. 15. The most important thing you have to achieve
  7. 16. Consumed by fire
  8. 18. To make and plan something
  9. 19. Extremely large in size and amount
Down
  1. 1. Free of all other substances
  2. 2. A period of time in history
  3. 4. How far away something is
  4. 5. Use one thing instead of a different thing
  5. 6. Making product often in factory
  6. 8. Absolutely necessary
  7. 9. A number of different kinds of the same thing
  8. 10. One of the parts that something is divided into
  9. 13. An organized promotion of something
  10. 17. The highest amount or value of something
  11. 20. Move slightly or gradually