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 Definitions of ecological systems, closed  

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Definition of 'ecological systems, closed' U.S. National Library of Medicine 

1.  ecological systems, closed
Systems that provide for the maintenance of life in an isolated living chamber through reutilization of the material available, in particular, by means of a cycle wherein exhaled carbon dioxide, urine, and other waste matter are converted chemically or by photosynthesis into oxygen, water, and food. (NASA Thesaurus, 1988)

'ecological systems, closed' - Nearby Entries  

eclipta  ecological and environmental phenomena  ecological and environmental processes  ecological systems, closed  econazole  economic competition  economic development  



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