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Final answer:The body's three majorchemical buffer systems, the Phosphate buffer system, Bicarbonate buffer system, and Protein buffer system, work individually within different body fluids to react with acids or bases and prevent significant pH changes.Explanation:The three major chemical buffer systems in the body include thePhosphate buffer system, the Bicarbonate buffer system, and the Protein buffer system. The Phosphate buffer system predominantly regulates the pH in the intracellular fluid (ICF) and urine, using a mixture of Na2HPO4 and NaH2PO4. It can react with strong acids or bases to prevent drastic pH fluctuations.The Bicarbonate buffer system works primarily in the Extracellular fluid (ECF). It uses a mixture of NaHCO3 and H2CO3 to buffer acids and bases, keeping the body’s pH balanced. Lastly,Protein buffer systemis distributed in ICF and plasma. They contain both exposed amine (-NH2) groups and carboxyl (-COOH) groups that can add or remove protons to resist pH changes. These proteins can react with acids or bases to adjust the pH back tophysiological levels.Learn more about Chemical Buffer Systems here:brainly.com/question/32543243#SPJ11...