Chemistry Crossword

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Across
  1. 4. Branch of engineering that writes programs
  2. 5. Branch of engineering that designs objects which do physical work
  3. 6. Branch of engineering concerned with things like airplanes and rockets
Down
  1. 1. Branch of engineering concerned with the natural world (forests, oceans, etc..)
  2. 2. Branch of engineering that designs things like medicine and materials
  3. 3. Branch of engineering that sets up computer networks