You searched for: “autotrophy
autotrophy (s) (noun), autotrophies (pl)
A situation when self-sustaining organisms (green plants, algae, and certain bacteria) are able to produce food from inorganic compounds:
  • Carbon autotrophy, ability to assimilate carbon dioxide from the air.
  • Nitrogen autotrophy, ability to assimilate nitrate or to do nitrogen fixation.
  • Sulfur autotrophy, ability to assimilate sulfate.