What is the value of water for the living. What is water, water value in human life

The most familiar and most incredible substance on the ground is water. The value of water cannot be overestimated in the life of everything alive on the planet, it is present in every moment of our existence. Being a predominant element in the composition of any body, water leads and its livelihood.

Water in nature

Humanity throughout the existence is trying to solve the secret of this amazing and controversial element. How did she arise how he got to our planet? Probably, no one can answer this question, but everyone knows that the value of water in the nature and life of a person is unimaginable. One thing is absolutely true - today the stocks of water on Earth as much as it was at the birth of the universe.

The unique properties of water shrink when heated and expand during freezing - another reason is surprised. No other substance has similar properties. And its ability to move from one state to another, so familiar and at the same time, an amazing, playing exceptional role, makes it possible to exist all living organisms on Earth. The highest reasonable water is assigned the main party in maintaining life and participation in constantly occurring natural processes.

The water cycle

This process is called a hydrological cycle, which is a continuous circulation of water falling from the hydrosphere and the surface of the Earth to the atmosphere, and then back. Four process participate in the cycle:

• evaporation;
• condensation;
• precipitation;
• water flow.

Once on the ground, a piece of precipitation, evaporating, condensed, the other part thanks to the drain fills the reservoirs, the third appeals to the land. So, constantly moving, handing water artery, plants and animals and keeping their own reserves, cavoching, protecting the earth, water. The value of water is obvious and undoubtedly.

Mechanism of the cycle and its types

In nature there is a large cycle (the so-called world), as well as two small - continental and oceanic. The precipitate-going over the oceans is transferred to winds and fall on the continents, and then return to the ocean again. Process when oceanic water Continuously evaporates, condensing and falling into the ocean again in a small ocean cycle. And all the similar processes occurring over land are combined into a small continental cycle, the main acting person in which is water. Its value in natural processes of continuous circulation, maintaining the water balance of the Earth and ensuring the existence of living organisms, is undoubtedly.

Water and man

Not having nutritional value in the usual concept, water is the main component of any living organism, including a person. No one can exist without water. Two thirds in the composition of any body occupies water. The value of water is extremely important for the proper functioning of all systems and organs.

Throughout life, a person comes into contact with water daily using it for drinking and food, hygienic procedures, recreation and heating. There is no
more valuable natural material, such a vital and indispensable, like water. After without food, quite large periods of time, a person will not live without water and 8 days, since when 8% of body weight, the person starts fainting, 10% cause hallucinations, and 20% inevitably cause fatal outcome.

Why is the meaning of water for a person? It turns out that water regulates all major life processes:

• normalizes the moisture of oxygen, increasing its suction;
• performs thermoregulation of the body;
• dissolves nutrients, helping the body in their assimilation;
• moisturizes and creates protection with vital organs;
• forms a protective lubricant for joints;
• improves metabolic processes in the activities of the body systems;
• promotes the evacuation of waste from the body.

How to maintain water balance

On average, a person loses 2-3 liters of water per day. In more extreme conditions, for example, in the heat, with high humidity and physical exertion, water loss increase. To preserve the normal physiological water balance of the body, the water flow should be equalized with its elimination by competent

We will produce some counts. Given that the daily need of a person in water - 30-40 grams per 1 kg of body weight and about 40% of the overall need comes with food, the rest should be taken as drinks. In summer, the daily water consumption corresponds to 2-2.5 liters. The hot regions of the planet dictate their requirements - 3.5-5.0 liters, and in extremely hot conditions up to 6.0-6.5 liters of water. It is impossible to dehydrate the body. The alarming symptoms of this misfortune are dry skin, accompanied by itching, fatigue, a sharp decline in the concentration of attention, blood pressure, headaches and overall malaise.

Useful effect

Interestingly, taking direct participation in metabolic processes, water helps reduce weight. There is a randaking that wishing to lose weight people need less drinking water, as the body keeps water, causes tangible harm. You can not drive your own body to even greater stress, knocking it out of the usual water exchange. In addition, moisture, being a natural diuretic, tones the work of the kidneys, provoking weight loss.

Getting the optimal amount of water, a person adds forces, energy and endurance. It is easier for him to control the weight, since even psychological inconvenience from forced changes with a decrease in the usual ration is carried out easier. Scientific research It has been proven that the daily use of a sufficient amount of clean water helps to fight heavy illness - contributes to the weakening of the pain in the back, manifestations of migraine, reduce the level of sugar and cholesterol in the blood and blood pressure. In addition, toning the work of the kidneys, water slows downstream processes. It is proved that people with the creative principle are prone to drink a lot, and the great artists pushed the value of water to create masterpieces, it is important and in art.

Water exchange of plants

Just like a person, water is needed to any plant. In different plants, it ranges from 70 to 95% of the mass, controlling all the processes occurring. The metabolism in the plant is possible only with a large amount of moisture, so the value of water for plants is undoubtedly large. Dissolving mineral substances in the soil, water delivers them into a plant, providing their continuous influx. Seeds will not sprout without water, the process of photosynthesis does not work in green leaves. Water filling provides him with viability and storing a certain form.

The most important condition for the life support of the plant organism is the ability to absorb water from outside. The plant, getting water, mainly from the soil using the roots, supplies it into ground parts of the plant, where the leaves evaporate. Such a water exchange exists in each organic system - water, falling into it, gives evaporates or stand out, and then again, enriched with useful substances, falls into the body.

Another amazing way to penetrate water into living cells is its osmotic absorption, i.e. water ability to accumulate from outside to cellular solutions, increasing the volume of fluid in the cell.

Art of water consumption

The constant use of pure water significantly improves the mental activity of the brain and coordination of movement, and therefore, the value of water for the vital activity of the brain cells is especially valuable. therefore healthy person Do not limit yourself in drink, but follow some rules follows:

• drink little, but often;
• it is not necessary to drink a lot of water at once, since the overabundance of fluid in the blood will deliver the heart and kidney an unnecessary load.

So, the value of water for living organisms is huge. Therefore, the creation of conditions for preserving its own water balance is necessary to each person.

Located on the territory of the city of Ozersk, Lake Intash, a large nanog and a small nanogue in the Irityas-Castle lake system. The only drinking source of Ozersk is Lake Intash, directly connected with the lake a large nanog. It is the bottom in the chain of the Lakes of the Irityashsky-Caslin system, which significantly affects chemical composition water. Especially noticeable influence of Lake B. Nanog. Changing the quality of water oz. B. Nanog entails a change in the water of Lake Ityash.

The chemical composition of lakes Big Nanog and Irityash has worsened over the past 30 years, and Lakes a small nanogue - remained unchanged. Another 30 years ago, the chemical composition of Lakes B. Nanog and M. Nanog was almost identical, now it is clear that in the water of Lake B. Nanog concentrations: phosphate - ions 48.5 times sulfate - ions at 33, 4 times, chloride - ion 2.9 times, ammonium nitrogen 3, 47 times higher than in the water of Lake M. Nanog. And when the number of foreign substances contained in it, especially those that have an adverse effect on man, animals and plants, reaches critical values, the water from the good turns into evil. Currently, Lake B. Nanog has lost its value as fisheries and drinking water. The quality of water in it does not satisfy the requirements even imposed on the reservoirs of cultural and domestic purposes.

Water quality deterioration is associated with an anthropogenic factor. Every year the number of gardens in the water protection zone of the lake increases. Biogenic substances, phosphates, nitrogen-containing substances come to the lake with storm and thawed drains in the lake. As a result, a mass reproduction of phytoplankton occurs, primarily a blue - green, green and red algae, as well as the intensive development of higher algae, which leads to a decrease in the oxygen content in water.

Water, hydrogen oxide, H20, simplest sustainable under normal conditions chemical compound hydrogen with oxygen (11.19% hydrogen and 88.81% oxygen by mass), molecular weight 18,0160; Colorless liquid without smell and taste (in thick layers has a bluish color). Water belongs the most important role in geological history Earth and the emergence of life, in the formation of a physical and chemical environment, climate and weather on our planet. Without water, the existence of living organisms is impossible. Water is a mandatory component of almost all technological processes - both agricultural and industrial production.

Water is the most important component of all ecosystems, and not only aquatic, but also ground, so the presence of water is an indispensable condition for maintaining environmental equilibrium and biodiversity both in water bodies and on land.

Water is an important component of living matter. In the body of an adult animal, its content is approximately 55-65%, and in newborns - 70-80%. Water, as a universal solvent, forms dispersed, molecular solutions and colloidal solutions (evils and gels in tissues). These properties of water are explained by the dipole structure of its molecule, and consequently, the high value of the dielectric constant. Water is not only a medium for the flow of various chemical reactionsBut also herself participates in the reactions of hydrolysis, hydration and dehydration, oxidation, and in some synthetic processes. The rate of hydrolytic reactions in them depends on the water content in the tissues.

Water has a high heat capacity and thermal conductivity, which is active in the thermoregulation of the animal organism. Water, possessing good fluidity, is able to quickly move in the body; Wetting the rubbing surfaces in the tissues, it helps to improve sliding in the joints and other moving areas of the body.

The uniqueness and value of water is constantly inspected. Humanity severely attacks water and she, showing his mood, changes everything on Earth, in the form of cyclones, harass, fogs, storms, hurricanes, typhoons. number natural cataclysms annually increases. Over the past 30 years, 4 million people died for their reason, and about 4 billion were injured.

Biogeochemical properties of heavy metals

Heavy metals are elements of the periodic system with relative molecular weight More than 40. It so happened that the terms "heavy metals" and "toxic metals" became synonymous. To date, unconditionally to the number of toxic are cadmium, mercury, lead, antimony. The activity of a significant part of the rest in living organisms can be estimated only for "excellent". Indeed, metals in ion form are part of vitamins, hormones, regulate the activity of enzymes. It has been established that for protein, carbohydrate and fat metabolism, MO, FE, V, CO, W, B, MN, ZN is necessary; In the synthesis of proteins, Mg, Fe, Cu, Zn, Mn, CO are involved; in blood formation - CO, CU, MN, NI, ZN; in breathing - Mg, Fe, Cu, Zn, Mn, Co. It is true that there are no harmful substances, there are harmful concentrations. Therefore, the ions of copper, cobalt or even chromium, if their content in the living organism does not exceed natural, can be called microelements, but if they are genealogically associated with the factory pipe, then these are heavy metals. Heavy metals (mercury, lead, cadmium, zinc, copper, arsenic,) refer to the number of common and very toxic pollutants. They are widely used in various industrial production, therefore, despite the cleaning measures, the content of the compound of heavy metals in industrial wastewater is quite high. Large masses These compounds enter the ocean through the atmosphere. For marine biocenoses, mercury, lead and cadmium are most dangerous. Mercury is transferred to the ocean with the mainland drain and through the atmosphere.

According to one classification, more than 40 elements with high relative metals belong to a group of heavy metals. atomic mass and relative density more than 6. On another classification, this group includes non-ferrous metals with a density greater than that of iron (lead, copper, zinc, nickel, cadmium, cobalt, tin, antimony, bismuth, mercury).

According to the information presented in the "Directory for Elementary Chemistry" ed. A. T. Pilipenko (1977), elements whose density of more than 5 g / cm3 is assigned to heavy metals. If they proceed this indicator, it is difficult to consider 43 of 84 metals of the periodic system of elements. Among these 43 metals 10 have along with the metal properties of signs of non-metals (representatives of the main subgroups VI, V, IV, III Group Therefore, the term "heavy elements" would be more stringent, there would be a term "heavy elements", but in this publication we will use the term "heavy metals" generally accepted in the literature.

Thus, heavy metals refer over 40 chemical elements With a relative density of more than 6. The number of dangerous pollutants, if we take into account the toxicity, durability and ability to accumulate in the external environment, as well as the scale of the propagation of these metals, is significantly less.

First of all, those metals that are most widely and largely used in industrial activities and as a result of accumulation in the external environment are of serious danger from the point of view of their biological activity and toxic properties. These include lead, cadmium, zinc, cobalt, nickel, copper, manganese.

In aqueous media, the metals are present in three forms: suspended particles, colloid particles and dissolved compounds. The latter are represented by free ions and soluble complex compounds with organic (humic and fulvocyuslots) and inorganic (halides, sulfates, phosphates, carbonates) ligands. A large influence on the content of these elements in water has hydrolysis, in many respects defining the form of finding an element in aqueous media. A significant part of heavy metals is transferred to surface waters in a suspended state.

Sorption of heavy metals bottom sediments depends on the features of the composition of the latter and content organic substances. Ultimately, heavy metals in aqueous ecosystems are concentrated in bottom sediments and biota.

Material and technique

Research on the maintenance of heavy metals was subjected to samples of the water of the lake and two species of fish inhabiting in it: perch and sig. In the Laboratory of Ugavm, the content was determined: copper, iron, cobalt, nickel, lead, zinc, cadmium, manganese, magnesium.

It turned out that in the water of the lake for a number of elements expressed exceeding the MPC: copper 56 times, zinc 16 times, nickel 4 times and manganese 2 times, the iron content was at the top level of the MPC.

The results of the study of nine heavy metals in the tissues of fish living in the lake Big Nanaga indicates that their level is mostly not exceeding the MPC.

For system approach These results found that the organism of the fish forms two echelon pyramid.

At first level it is two subsystems, in the first of which contained three elements. Its activation is caused by changing the content of iron fish tissues, the result of the subsystem activity was a significant reduction in cobalt.

In the second order subsystem contained three elements. Activation occurred due to a change in the content of zinc fish tissues, the result of the activity was the desire to reduce cadmium.

On the second echelon, the organism of fish was formed by one subsystem. An element of its activation was iron, the result of activity is a significant decrease in zinc.

Outside the subsystem, due to the lack of control mechanisms, Cadmium turned out to be.

Thus, if the water condition indicates a significant exceeding MPC of four elements of nine (copper, zinc, nickel and manganese), in the body of fish are also four, but, somewhat other (cadmium, lead, Nickel Manganese), although the PCC for fish tissues is not exceeded the norm.

At the university in the third year we had scientific discipline - chemistry of water. Of all students, this item was given to me best, because I still have school lessons Chemistry were interested amazing properties water. This is true unique the substance that is necessary for the lives of all living organisms.

What is water

Water is a compound of hydrogen with oxygen. In the water molecule, two hydrogen atoms are connected by a covalent bond with an oxygen atom. Under normal conditions Water is a transparent liquidthat there is no taste and smell. Water is one of the most common substances on our planet.That is why the land is replete with various forms of life. As water is good solventAlmost all processes in organisms take place with its help. No wonder scientists are primarily looking for water on distant planets, because if there are "liquid water" on the planet, it means that life should exist.

Water has several chemical titles:

• hydroxide hydrogen;
  
• dihydrogen monooxide;
  
• dihydromonoxide;
  
• hydrogen oxide.

The role of water in the life of living organisms

Water - the basis of the whole life. As a universal solvent, it performs all the processes in the body associated with Transportation and assimilation of substances. Salts that dissolve in water supply all living beings on the planet. Also, water is unique in that it can be simultaneously in three aggregate states - solid, liquid and gaseous.The ice density is much more water density, so first freezes the top ball, which prevents the freezing of all the water. It is this feature that removes all living organisms that live in water. Animal organism consists of water more than 50%, plants are more than 90%. In animal organisms water regulates body temperaturehelps to protect the body from high temperatures helps use the useful substances and convert food into energy, removes toxins and waste from the body.

Also water supports a stable temperature on the planet. It is due to the cycle of water in nature, it is possible to maintain large number species on earth. Therefore, humanity must be understood that wealth is not valuable metals, oil or paper, the main wealth is water.

Water is the basis of life of all living beings. She belongs to the most important role in the vital activity and development of organisms:

- water is the basis of the bodies of living organisms;

- Water is a medium and a participant in the bodies of living organisms of biochemical reactions;

- Water is a medium, as part of which organisms are obtained by many of the substances they need and get rid of the exchange products (slags);

- In plants, water participates in photosynthesis - it is consumed by 5% of all water consumed, and 95% of it goes to transpiration (evaporation by leaves, which creates an upward current of mineral salts) and maintaining the turgore (elasticity) of tissues;

- water is a living environment of aquatic organisms;

- high heat capacity of water allows warm-blooded animals to maintain the constancy of the temperature of their bodies;

- Slow heating and slow cooling of water soften temperature fluctuations, because of which the climate of the coasts is called "soft", or maritime;

- The high temperature of evaporation of water allows organisms to get rid of excess heat;

- Other important features.

In view of importance biological functions It is very often a limiting factor and along with the temperature and composition of soil determines the types of ecosystems (steppes, savanna, dry forests, wet forests).

The greatest amount of precipitation falls in the tropical belt. This is explained by the maximum flow of the sun energy. Due to the high temperature, the tropical air absorbs much more water than the cool in higher latitudes. Thus, the wet climate of the tropics is due to the large amount of energy of the sun.

The amount of precipitation has an influence of the ratio of land and sea areas: in the southern hemisphere, where more square Oceans and less area of \u200b\u200bcontinents, precipitation falls more than in Northern.

Not only the total amount of precipitation falling on the ground is important, but also their intensity and time distribution.

Very strong rains, especially in the absence of vegetation cover, cause the erosion of the soil, the death of seedlings of plants and small animals. The strongest damaging effect has sediments in the form of a hail, the particle size of which can be with a chicken egg. Long periods of frosting rains are unfavorable for insects and insectivorous birds, especially in the period of feeding with them of chicks. In the absence of precipitation, organisms have to be transferred long periods drought.

In the tropical belt, the precipitation regime serves as a factor determining the seasonal activity of organisms - their biological rhythms. In moderate latitudes, the main signals of the seasons of the year are the duration of the daylight (photoperiod) and temperature mode.

Air humidity

The air humidity indicator characterizes the degree of its saturation with water vapors.

Absolute humidity The air is called the amount of water vapor per unit of its mass, and the relative is the ratio of the amount of water vapor available to the maximum possible at a given temperature (in%).

Air humidity has a great environmental value.

The intensity of its evaporation from the surfaces of body organisms depends on the amount of moisture in the air. With low humidity, evaporation is very strong and can lead to dehydration (dehydration) organisms. To protect against dehydration, many of them have acquired special adaptations:

- Plants - a thick cuticle, the ability to reset the leaves in the dry season, the ability to turn the leaves, loss (reduction) of leaves, the insertion and wax fall on the leaves, submerged the tissue of the Stutian leaf - holes through which water evaporates;

- Animals - horny scales, chitinic covers, etc.

The desicing properties of air depend on deficitits saturation with water vapors - the difference between the absolute and the highest possible humidity at a given temperature.

Adaptation of organisms to different levels of moisturizing

Adaptation of plants. Depending on the need for water, all plants are divided into three environmental groups.

1. Hydrophitis (from Greek. Hydor - water, moisture) - moisture-boring plants, they are:

- plants that are fully in water - Elday;

- Plants that have only roots are shipped to water - reed, ferry, cream, papyrus;

- Plants growing in wet places - mosses, ferns, plauins, etc.

2. Mesophytes (from Greek. Mesos - medium, intermediate) - plants of moderately humid places (fields, forests, meadows) have devices to produce water - developed root system, coating and conductive tissues, mechanisms for regulation of evaporation level.

3. Xerophytes(from Greek. Xeros - Dry) - Plants of dry places (dry steppes, savannah, semi-desert, deserts) are able to endure the lack of moisture.

Xerophytes overcome the lack of moisture in the following ways:

- increase its absorption with the help of the powerful development of root systems: some plants are deserts the mass of the roots exceeds the mass of ground bodies of 9-10 times;

- reduce water loss with a decrease in evaporation by leaves;

- accumulate water in fleshy stems (cacti and African sofa) or in leaves (aloe, agave);

- We produce mechanisms that allow to transfer the lack of water.

Plants accumulating water in fleshy stems or leaves are called stool and leaf succulents (from lat. Succulentus - juicy). To protect against evaporation, they have a thick coat fabric, and cacti - dust (holes through which evaporation occurs), deeply immersed in the leaf fabric and opening only at night when the air temperature decreases. At the same time, the root system of succulents is poorly developed, since they grow in localities, although with rare, but abundant precipitation.

Plants not accumulating moisture, but mining it from large depths and having a structure to maximize evaporation reduction, called sclerophytes (from Greek. Skleros is solid, hard). Sclerophytes have rigid dry stems, minor hard leaves, which are often dumped during the dry season. Many sclerophytes leaves are reduced (saksaul) or porrows.

Adaptation of animals. There are three types of animal adaptation to drought.

1. Behavioral - Migration to places where there is water, visiting water, night lifestyle, shelter in Norah.

2. Morphological- The presence of protective covers.

3. Physiological:

- the presence of reverse absorption mechanisms in digestive and excretory systems;

- allocation of highly concentrated or solid urine;

- synthesis of metabolic water;

- Ability to transfer strong dehydration.

List of basic literature

1. Chebyshev N.V., Filippova A.V. Basics of ecology. - Moscow, 2004

2. National state report ambient In the Republic of Kazakhstan, MOSP RK, Almaty, 2007

3. VGignatov, A.V. Kokin. Ecology and economics of environmental management., R-A-D, 2003

4. L.I. Gubareva, O.M.Mizirev, TM Churilova. Ecology of a person. M., 2005

5. G.S. Sepanova, T. Bozshataeva. Ecology. - Almaty, 2002

6. Edited by A.S.Stpanovsky. General ecology. M., 2001

Four elements of nature, four elements gave birth to Earth - this is fire, air, earth and water. Moreover, the water appeared on our planet for several million years than the same soil or air.

It would seem that the water has already been studied by a person, but scientists still find the most amazing facts About this natural element.

Water is a mansion in the history of our planet.
No natural body that could
Compare with it on the effect on the course of the main,
The most ambitious, geological processes.
IN AND. Vernadsky

Water is the most common inorganic connection on the ground. And the first exceptional property of water is that it consists of compounds of hydrogen and oxygen atoms. It would seem that such a compound according to chemical laws should be gaseous. And water is liquid!

So, for example, everyone knows that water exists in nature in three states: solid, liquid and in the form of steam. But now more than 20 states of water are distinguished, of which only 14 are water in the frozen state.

Surprisingly, the water is the only substance on the ground, the density of which is less in a solid state than in liquid. That is why the ice is not sinking, but the reservoirs are not freezing to the bottom. Is that with extremely cold temperatures.

Another fact: water is a universal solvent. By the amount and quality of dissolved elements and minerals dissolved in water, scientists allocate approximately 1330 species of water: mineral and melt, rain and dew, glacier and artesian ...

Water in nature

In nature, water plays an essential role. At the same time, it turns out to be involved in a variety of mechanisms and life cycles on the ground. Here are just a few facts that clearly demonstrate its significance for our planet:

• The value of the cycle of water in nature is just huge. It is this process that allows animals and plants to get so necessary for their life and existence of moisture.
• Seas and oceans, rivers and lakes - all reservoirs play a crucial role in creating a climate of a particular area. And the high heat capacity of water provides a comfortable temperature on our planet.
• Water plays one of the key roles in the process of photosynthesis. Do not be water, plants could not process carbon dioxide In oxygen, and hence the air would be unsuitable for breathing.

Water in human life

The main consumer of water on Earth is a person. It is not by chance that all global civilizations were formed and developed exclusively near the reservoirs. The value of water in the life of a person is just a huge.

• The human body also consists of water. In the body of the newborn - up to 75% of the water, in the body of an elderly person - more than 50%. It is known that a person will not survive without water. So, when we disappear at least 2% of the water from the body, the painful thirst begins. With a loss of more than 12% of water, man will not restore without the help of doctors. And losing 20% \u200b\u200bof the water from the body, the person dies.
• Water is an extremely important source of nutrition for a person. According to statistics, a person in the normal period consumes 60 liters of water (2 liters per day).
• It is water that delivers oxygen and nutrients to each cell of our organism.
• Due to the presence of water, our body can adjust the body temperature.
• Water also allows you to process food into energy, helps the cells absorb nutrients. And the water takes slags and waste from our body.
• A man everywhere uses water for his needs: for food, in agriculture, for various production, to generate electricity. It is not surprising that the struggle for water resources is grooming. Here are just a few facts:

More than 70% of our planet is covered with water. But at the same time, only 3% of all water can be attributed to drinking. And access to this resource every year becomes more difficult. Thus, according to RIA-News over the past 50 years, more than 500 conflicts associated with the struggle for water resources occurred on our planet. Of these, more than 20 conflicts have grown into armed clashes. This is just one of the numbers, brightly demonstrating how important the role of water in human life is.

Water pollution

Water pollution is called the process of saturation of water bodies with harmful substances, production waste and household wasteAs a result of which water loses most of its functions and becomes unsuitable for further consumption.

Basic sources of pollution:

1. Oil refinery
2. Heavy metals
3. Radioactive elements
4. Pesticide
5. Streams of urban sewers and livestock farms.

Scientists have long been taking the alarm that the World Ocean receives over 13 million tons of petroleum products every year. Wherein Pacific Ocean Gets up to 9 million tons, and Atlantic - more than 30 million tons.

According to the World Health Organization, our planet has no sources left, in which pure natural water would be present. There are only reservoirs contaminated by less than the rest. And it threatens the catastrophe of our civilization, because without water, humanity simply will not survive. And nothing to replace it.