Regeneration of oxygen from carbon dioxide in closed ecological systems.
D002245:Carbon Dioxide; D019069:Cell Respiration; D018504:Ecological Systems, Closed; D006801:Humans; D010100:Oxygen; D012038:Regeneration; D012119:Respiration; D013026:Space Flight
D002245:Carbon Dioxide; D010100:Oxygen
RESPIRATION; SPACE FLIGHT