Explain the compound water?

Water :  Water is the most important compound in living cells, making up most of the bulk of living organisms. Our own bodies contain 40% - 60% water. We can survive without food longer than we can without water. Water has several unique properties that make it important to living organisms:

(1) Water is a good solvent. More substances dissolve in water than in any other liquid. Because of its polar nature, water is able to break up ionic compounds into their component ions, freeing them to react with other substances.

(2) Because it is a polar molecule, water is both cohesive and adhesive, which results in capillarity, the ability to move through small orifices or fine pores against the force of gravity and other forces.

(3) The heat of vaporization of water is high; that is, water takes up large quantities of heat when it evaporates, making it a good evaporative coolant. Both plants and animals use water evaporation from surface cells for cooling.

(4) Water has a high specific heat, meaning that it requires a large amount of heat to change its temperature. Since living organisms are made up mostly of water, they gain and lose heat slowly. Water is able to absorb heat from chemical reactions in the organisms.

(5) Water has a high thermal conductivity, or heat conduction, which helps to keep parts of the organism from overheating.

(6) Because of its cohesion, water has a high boiling point. The significance of this is that water does not readily change from a liquid to a gas. In fact, a relatively large quantity of heat is required to change water from a liquid state into gaseous steam.