Science agriculture crossword

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Across
  1. 3. made in feilds
  2. 4. separation of seed from shaft
  3. 5. large tanks
  4. 8. one step is drying
Down
  1. 1. examples:beutachlor
  2. 2. made in factories
  3. 6. related to the agricultural steps
  4. 7. removal of chaff from grain