#saving__preservation  the activity of protecting something from loss or danger
  supertype:  #protection  the activity of protecting someone or something; "the witnesses demanded police protection"
  subtype:  #fixation__fixing  (histology) the preservation and hardening of a tissue sample to retain as nearly as possible the same relations they had in the living body
  subtype:  #conservation  the preservation and careful management of the environment and of natural resources
     subtype:  #conservancy  the official conservation of trees and soil and rivers etc.
     subtype:  #soil_conservation  protection of soil against erosion or deterioration
     subtype:  #oil_conservation__oilconservation  the conservation of petroleum resources
     subtype:  #water_conservation__waterconservation  the conservation of water resources
  subtype:  #self-preservation  preservation of yourself from harm; a natural or instinctive tendency
  subtype:  #reservation  the act of keeping back or setting aside for some future occasion
  subtype:  #embalmment  preservation (of a dead body) by treating with balsams and drugs and other chemicals
     subtype:  #mummification  embalmment and drying a dead body and wrapping it as a mummy

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