Vocab 62

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Across
  1. 5. to discover
  2. 7. the sickness
  3. 11. the development
  4. 13. to find out
  5. 14. the device / gadget
  6. 17. to disappear
  7. 18. to replace
  8. 19. to invent
Down
  1. 1. the advance
  2. 2. to cure
  3. 3. to pollute
  4. 4. to predict
  5. 6. the invention
  6. 7. the factory
  7. 8. to prolong
  8. 9. to communicate
  9. 10. the source of energy
  10. 12. the genetics
  11. 15. to increase
  12. 16. to reduce