Ecological Systems, Closed

Medical Dictionary -> Ecological Systems, Closed

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)


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