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In the body, substances are continiuously absorbed and released.
Author: Horváthné Kunstár Andrea, Jámbor Gyuláné
metabolism, circulatory system, removal, respiration, feeding, digestive tract, vein, capillary, kidney, artery, lung, organism, organ system, life processes, gas exchange, exhalation, inhalation, health, organ, human body, biology, nature study, anthropology, hygiene, anatomy
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