Fluidity is one of the most important characteristics of water, but also represents a characteristic of vitality. The world's most basic substances: gold, wood, water, fire and earth. Stone is no water, does not have the characteristics of mobility, and there is no life to speak of.

Trees are meant to absorb moisture from the soil and air, and through the internal structure of the tree, this moisture will soak into all parts of the tree to promote its growth, so trees are alive. Fire has great mobility when blown by the wind, and water and fire have no mercy, but the mobility of fire is still different from the mobility of water, and what fire brings is not the birth of life, but destruction, death, and disappearance.

The characteristics of the wind needless to say, it itself is the flow, which is a common phenomenon in the weather and climate, from the point of view of life, the flow of the wind, that is, it can bring the birth of life, but also can bring all kinds of damage and destruction.

Any living being, especially an animal, is inextricably and inextricably linked to water. One of the main factors is that water has the characteristics of mobility, due to the flow, will be alive, only life can be said. If it does not flow, if it stops flowing, life is over.

Originally, water is inorganic and initially not alive. For example, there is water on many planets, and water has been found on Mars. But whether these water resources can bring life is another story, because from the emergence of water to the emergence of life is to go through billions of years of evolutionary time;

And from the emergence of micro-organisms and then to the emergence of a real variety of organisms and to go through billions of years of evolutionary process. So, when we now see, all the time with our life closely linked to the water situation, which has been behind the time of change of at least a few billion years.

So how is water connected to life? On the surface of the Earth, 71% of the surface area is occupied by water and only 29% by land, with more than two-thirds of the area surrounded by water.

So the name "Earth" doesn't really fit the current state of the planet, and the real name of the Earth should be "Mercury," which is an interchangeable name with the planet Mercury in our solar system. Or called "Water Earth", in short, not to add a "water" word, it is difficult to summarize the face of the Earth.

It is because of this vast and boundless water resource that water is able to reach all the dispersed bacteria on the earth, and this water resource is a vast and boundless, huge biological hotbed, which is the most suitable environment and place for the reproduction and growth of various microfungi.

Water is from high to low flow, can be with the wind by the flow, the cycle, can also be turned into water vapor up to the high altitude, and then into a heavy rain drifted to the ground. This fluid character of water makes it nurture all the living things on earth, which collide, converge, intermingle, reproduce and grow up in the water, and then spread and propagate in all directions.

Not only that, this gene of mobility started from the earliest microorganisms, and gradually affected all kinds of organisms in the ocean, and then passed on to amphibians, land animals, mammals, primates, and finally to human beings, so that all the organisms on the earth have this gene and characteristic.

Particularly in the body of the animal performance is particularly obvious, each has been nourished by the water of the animal is able to become the size of the body, activity, with vitality. This lies mainly in the fact that they have flowing blood in them, and in that blood there is the presence of water. When the water that you have in your body is flowing, you are in a living being.

When the water in your body is in a state of immobility, or dried up, your life comes to a grinding halt. The reason why the fluidity of water is important is reflected in this.

Two, permeability

The so-called permeability, is a substance immersed in another substance, and its mixing and mingling together. Water not only has the property of flow, but also has the characteristic of permeability.

However, this kind of osmosis is not generalized, but there are conditions. If it is in the temperature below zero, water will become solid ice, will not have the function of infiltration, must be in the temperature above zero, water can show its infiltration function.

As a liquid, water can penetrate into a variety of objects. These penetration, some are a large number of, some are in the amount, there are also trace, especially those extremely small amount of penetration, for example, how does water penetrate into a cell? This is an extremely subtle and magical but quite complicated process, in which the subtle infiltration, there are still a lot of mysteries that make it difficult for people to solve.

All kinds of substances on the earth, through the penetration of water will happen a lot of subtle changes, which can directly or indirectly give birth to new life and new species. Based on this, we can regard the permeability of water as an important origin for the production of life.

Due to the permeability of water, the most produced in nature and biology are carbohydrates. These are organic compounds, composed of three elements, carbon, hydrogen and oxygen, with a broad spectrum of chemical structures and a wide range of functions in the composition of biological tissues.

The multifarious and colorful carbohydrates are not so much the result of water infiltration as the fact that the water in this has become a necessary component of this substance.

In fact, in the structure of the human body, its basic substances are carbohydrates, plus proteins, minerals, water and so on. These compounds are the basic elements that make up the various cells of the human body, and it is through the combination between the cells that a variety of tissues can be formed, from which the various organs and systems of the human body are constructed, and finally form a unified human structure organism.

It is interesting to note that any carbohydrate organism needs to feed on other carbohydrates to absorb their nutrients and nourish and grow itself.

The human body, as a carbohydrate life-form, also needs to chew and eat a variety of carbohydrates as food day in and day out to replenish its nutrients and to grow and live.

Throughout the entire human structural organism, water is immersed into various parts and organs of the body through its fluidity and permeability. Through osmosis, water blends with various other nutrients and will produce various fluids such as blood, fluids, saliva, bile, brain matter, etc., which function in various parts of the body.

The permeability of water may seem simple, but the enormous role it plays in the natural and biological worlds of the earth still requires constant research and exploration.

Three, to maintain

This characteristic is not the water itself, water retention is mainly on the natural world and the biological world, especially for human beings, water retention is particularly important.

Everyone in the drinking water, through the gastrointestinal function, the water will be absorbed bit by bit into the internal organs of the body, to provide raw materials for a variety of liquids in the human body, and in this way to moisturize its various organs. At the same time, some of the waste water, such as urine, sweat, etc. will be excreted out of the body. This metabolic function sustains people's lives.

So, it is necessary to maintain a certain amount of water in a person's body and to a certain degree of level. Depending on the age, children's bodies have to maintain more water to more than 80%, middle-aged people at 50 to 60%, and even the elderly, the water in the body has to be maintained at a level of about 40%.

Because only by maintaining a certain amount of water, the body's organs can function normally and remain healthy. It is like the lubricating oil of a car, with which the car can run properly.

Water retention, not only about human ecology, but also about the ecology of the biological and natural world, in order to make the ecological environment of our planet to get a virtuous cycle, benign development, is absolutely can not ignore the problem of water retention.