engineers and inventions.

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Across
  1. 4. used to see stuff very very small
  2. 5. something used to light up something
  3. 7. used to sit and go place to place faster on land
Down
  1. 1. device used to talk to someone you cant see
  2. 2. device that students do school work on
  3. 3. used to get from place to place in the sky
  4. 6. lets you see your bones