Water has many roles in living organisms and life on earth. In a water molecule, two hydrogen atoms are joined to an oxygen atom by covalent bonds. Water makes up more than two thirds of human body weigh.Without water, we would die in a few days.
The human brain is made up of 95% water, blood is 82% and lungs 90%.
Water is important to the mechanics of the human body. The body cannot work without it, just as a car cannot run without gas and oil. In fact, all the cell and organ functions are depend on water for their functioning. Water flows readily through narrow capillaries due to the fact that water molecules can slide over each other as they have very low viscosity.
Friends as we all know that water is essential for every one in this world. But it is with great pain I have to say that we are not unable to understand the importance of water. So we have to save water.
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