"It cannot be said that water is necessary for life: it is life," Saint Exupery said about this liquid, which we use without particularly thinking about.
Do you know that water is the most valuable product for a person, and that our body consists of water by 60-70% (for an embryo in the fifth month - by 94%)?
Water delivers nutrients (vitamins, mineral salts, etc.) to the cells of the body and carries waste of life. It is necessary to drink at least 1.5 liters of water a day to provide the body with sufficient thermal stability and don’t lose more than 15% of the water contained in it: otherwise the body faces dehydration.
Water is a hydrogen oxide.
The surface of the Earth, occupied by water, is 2.5 times larger than the land surface.
There is no clean water in nature - it always contains impurities.
The pure water is obtained by distillation.
Purified water is called distillated.
Water composition (by weight): 11.19% hydrogen and 88.81% oxygen.
The increased content of sulphates gives the water a bitterish taste, chlorides - a salty taste, iron and manganese - an inky, ferrous taste.
Water has the most refreshing effect at a temperature of 7-11 °C.
At a water temperature above 15 ° C, its flavor properties decrease, and it badly quenches thirst.