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Date: 2008-11-13 06:59:52 | 14 Excretion and the kidneys - answers 1 Carbon dioxide, urea, uric acid, spent hormones, excess water and salts (any four) have to be excreted from the body.Add to Reading ListSource URL: www.biology-resources.comDownload Document from Source WebsiteFile Size: 22,00 KBShare Document on Facebook |