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Circulation Gas Exchange - PowerPoint PPT Presentation


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28 Oct. 2013. Circulation.ppt. 2. Animal Life . Four critical processesObtain energy and materialIngest, digest, absorbObtain oxygen Dispose of nitrogenous wasteNH3, urea, uric acid Dispose of CO2. Animal Life . Multicellular organismsInternal circulationCoordination, information transferSt

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