Natural

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Across
  1. 3. , synonym of deserted, empty, forgotten, eliminated, etc.
  2. 5. , a variation in the strength of received radio signals due to variations in the conditions of the transmission medium.
Down
  1. 1. , a person who cuts the throat of another; a murderer
  2. 2. , a method of enhancing the visibility of the surface features of a specimen for electron microscopic viewing by spraying it from one side with a coating of metal atoms.
  3. 4. , to arrange in a straight line; adjust according to a line.