Inventions

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Across
  1. 3. a flow of electrical power or charge
  2. 5. To prevent people from getting sick
  3. 6. a structure made from materials like concrete.
Down
  1. 1. an electronic device that can store and process information
  2. 2. allows you to talk to far away family or friends
  3. 4. a device used for performing work by applying effort