closed ecological system

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closed ecological system [¦klōzd ek·ə′läj·ə·kəl ‚sis·təm]

(aerospace engineering)

A system used in spacecraft that provides for the maintenance of life in an isolated living chamber through complete 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.

(ecology)

A community into which a new species cannot enter due to crowding and competition.

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No references found			Not only did he help establish a master's program for Columbia University at the Biosphere 2 Center - an Arizona-based, closed ecological system - but he also founded The Centre for Eco-Intelligent Management in Europe with world-renowned designer William McDonough. Corporate Social Responsibility Weekly Recap (June 18 - June 25, 2008) by Business Wire Not only did he help establish a master's program for Columbia University at the Biosphere 2 Center - an Arizona-based, closed ecological system - but he also founded The Centre for Eco-Intelligent Management in Europe with world-renowned designer William McDonough. Corporate Social Responsibility Weekly Recap (April 23 - April 30, ... by Business Wire The grand prize winners will receive an all expense paid trip to Columbia University's BioSphere 2, the largest closed ecological system in the world, located near Oracle, Ariz. Volvo Cars Rewards Local San Diego Groups On May 27 for Participating ... by Business Wire			close-up casement hinge closed closed aerodrome closed architecture closed association closed ball closed bidding closed book closed braid closed building system closed captions closed cell closed circuit closed circular region closed competitive selection closed construction closed cornice closed covering closed curve closed cycle closed die closed dipath closed disk closed drainage closed eaves closed ecological system Closed Ecosystem closed file closed fireroom system closed fold closed frame closed graph theorem closed half plane closed half space closed high closed impeller Closed Impression Die Forging closed intervals closed joint closed lake closed linear manifold closed linear transformation closed list of bidders closed loop closed low closed magnetic circuit closed map closed mortise closed n-cell closed newel closed nozzle			Closed couplets closed covering Closed Crankcase Ventilation closed curve closed curve closed curve Closed curve theorem Closed curve theorem closed cycle closed cycle Closed Cycle Advanced Propulsion System Closed Cycle Diesel Closed Cycle Vapor Turbogenerator closed die closed dipath Closed disk closed dislocation closed DNA complexes closed DNA complexes closed DNA complexes closed DNA complexes Closed Document Closed doors Closed Drain closed drainage closed drainage closed drainage closed drainage closed eaves Closed Ecological Life Support System closed ecological system Closed ecological systems Closed economy Closed economy Closed economy Closed ecosystem Closed end Closed end Closed End Exchange Traded Bond Fund Closed end fund Closed end fund Closed end fund Closed end funds Closed end funds Closed End Indenture Closed End Indentures Closed End Investment Companies Closed End Investment Companies Closed End Investment Company Closed End Investment Company Closed End Lease Closed End Lease Closed End Lease closed end lease agreement Closed End Leases Closed End Leases Closed End Leases Closed End Leasing Closed End Leasing Closed End Leasing Closed End Liftable

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