Crossword_1

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Across
  1. 4. promotes world peace
  2. 5. significant during shooting a scene
  3. 6. basic building block of electronics
  4. 7. the essence of language
Down
  1. 1. geometry of headlights/telescopes
  2. 2. result of external factors/not inherent
  3. 3. criminal acts intended to provoke fear
  4. 4. modernising something