science and technologies discoveries

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Across
  1. 3. tracking and monitoring an object
  2. 5. form of electrical signals
  3. 7. heated gas
  4. 8. a car or with four wheels
  5. 10. use to transporting peaople
  6. 12. first practical engine in 1712
  7. 13. is an electric light
  8. 14. groups of molecules
  9. 15. create antibodies
Down
  1. 1. is a global network
  2. 2. received through broadcast
  3. 4. reproducing text and images
  4. 6. is machine programmable by a computer
  5. 9. use to call
  6. 11. treatment and cure