Crossword Puzzle

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Across
  1. 2. a branch of science dealing with production of crops
  2. 3. an alloy made of iron and magnesium
  3. 6. used as bio fertilizer
  4. 8. port city of Indus civilization
Down
  1. 1. Amrita Pritam
  2. 4. ancient dravidian language
  3. 5. iconic role played by Amir khan
  4. 7. used as bio fertilizer