different types of Engineers

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Across
  1. 3. relating to chemistry or the interactions of substances as studied in chemistry
  2. 4. research, design, develop, and test blank systems
  3. 5. produced by machines or machinery
  4. 7. the branch of technology and industry concerned with both aviation and space flight.
  5. 8. relating to both biology and medicine
  6. 9. relating to or characterized by industry.
Down
  1. 1. operating by or producing electricity.
  2. 2. relating to the natural world and the impact of human activity
  3. 6. courteous and polite