Hello

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Across
  1. 2. Makes food
  2. 6. SAND
  3. 7. Fly stuff
  4. 8. makes railroad.
  5. 11. make wires and poles
  6. 12. MAkes strong Buildings
  7. 14. Make sure things are available
  8. 15. makes paper-making machines.
  9. 17. Makes phones
  10. 19. Makes planes and spacecraft
  11. 20. The oldest engineers
  12. 21. Makes Highway
Down
  1. 1. Do technology for health
  2. 3. WATER
  3. 4. makes bomb
  4. 5. studies DNA
  5. 9. Rain and thunder
  6. 10. makes anti-lock brakes for cars.
  7. 13. They Insulate stuff
  8. 16. Doctors
  9. 18. Makes oil things.