The Water Issue Water in its liquid form is the material that makes life possible on Earth. All living organisms are composed of cells that contain at least 60 percent water. Furthermore their metabolic activities take place in a water solution Physical Properties Polar: One molecule is slightly positive, and the other is slightly negative Molecules tend to stick together Separate other molecules from each other(solvent) Stores Heat-retains heat Industrial coolant Modifies local climatesThe Water Issue • Physical Properties: – Polar: One molecule is slightly positive, and the other is slightly negative. ™ Molecules tend to stick together. ™ Separate other molecules from each other (solvent). ™ Stores Heat-retains Heat ¾ Industrial coolant ¾ Modifies local climates • Water in its liquid form is the material that makes life possible on Earth. All living organisms are composed of cells that contain at least 60 percent water. Furthermore, their metabolic activities take place in a water solution