Importance of Water in Our LifeWater is the most important substance for life. All living organisms require water more than any other substance to survive. Apart from drinking it, we use it for washing ourselves, clothes and dishes, cookery and etc. Also it is needed in agricultural sector, production units and industrial units.

Water has supported life on earth for billions of years. 75% of the earth is composed of water, the percentage varies between 70 and 90 for organisms.

The body of newborn babies composed of 78% of water. Adult men made up of about 60% of water, while the percentage of adult women is about 55%.

55% of our blood is water and approximate water ratio of some tissues is listed below:

TissueWater ratio (%)
Skeletal muscle75

Human can live roughly 3 weeks without food, 3 days without water, and 3 minutes without air. Generally, each day 2.2 and 3 liters of water must be consumed by female and male, respectively.

Water exists as gas, liquid and solid form. One of the interesting physical property of water is being as liquid form at room temperature due to the hydrogen bonds that form between water molecules.

Water dissolves much more solutes than most common solvents, so it is known as the universal solvent on earth.All of the metabolic reactions which are essential for life take place in the cytoplasm -liquid part- of the cells.

Water provides distribution of essential nutrients and minerals through blood flow and elimination of waste matters from the system throughout the body. Therefore, water is the most important and most needed molecule in life. The human being is looking for traces of water in any other planet because life is only possible with the existence of water.


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