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Water is one of the most significant substances to life. It is needed for thermal regulation and it is almost the universal solvent. Also, every reaction occurring inside an organism occurs in water. There are several properties of water. Without those unique properties, life wouldn’t have existed on earth. Water’s cohesive behavior, its ability to stabilize temperature, and its expansion upon freezing, are three out of the four properties that affect the functions of living organisms greatly. Cohesion is the ability of molecules to bind together, often by hydrogen bonds. Cohesion takes place in ice where most of the water molecules are bonded to their neighbors. The functioning of a tree is affected by cohesion. Water that are held together in columns within xylem vessels by cohesion due to hyd