The human body is riddled with millions of blood vessels. Large
arteries and veins are connected with each other main organs of the
body, smaller braid them on all sides, the finest capillaries reaching
almost dokazhdoy separate cells. Copa do you pit, sitting
there in class, or blissfully asleep on them constantly flowing blood,
tying a single system of the human body's brain and stomach, liver and
kidneys, eyes and muscles. For what need blood?
Blood brings to every cell in your body oxygen from the lungs and nutrients from the stomach. Blood collects wastes from everyone, even the most secluded corners of the body, freeing it from carbon dioxide and other waste, including hazardous substances. Blood spreads all over the body special substances - hormones that regulate and coordinate the work of different agencies. In other words, the blood connects different parts of the body into a single system, in a harmonious and stamina.
Just have a circulatory system and our planet. Lifeblood - water, and the blood vessels - rivers, streams, creeks and lakes. And it's not just a comparison, an artistic metaphor. Water in the world plays a role similar to that of the blood in the human body, and how recently, scientists have noticed, the structure of river network is very similar to the structure of the human circulatory system. "The driver of nature" - the so-called water the great Leonardo da Vinci, it is going from soil to plants, from plants to the atmosphere, the rivers flowing down from the continents to the oceans and returning back to the air flow, connecting with each other the various components of nature, turning them in a single geographic system. Water not only changes from one to another natural component. Like blood, it carries with it a great number of chemicals, exporting them from soil to plants, from the land into lakes and oceans from the atmosphere to the ground. All plants can consume the nutrients contained in the soil, only water, where they are in a dissolved state. If not for the influx of water from the soil to plants, all the herbs, even growing on the richest soils, would have died "of hunger," like unto a merchant man, who died of starvation in the chest of gold. Water supplies nutrients and inhabitants of rivers, lakes and seas. Brooks, fun flowing from the fields and meadows during the spring thaw or after summer rains, collect along the way are stored in the soil chemicals and convey them to the inhabitants of ponds and the sea, thereby linking land and water areas of the planet. Richest "table" is formed in places where carrying nutrients rivers flow into lakes and seas. Therefore, these parts of the coast - estuary - a riot of different marine life. Who removes the waste generated as a result of vital activity of different geographic systems? Again, the water, and in the position of the accelerator, it works much better human circulatory system, which only partially fulfills this function.
Especially important is the role of water purifying now, when a man is poisoning the environment with waste cities, industrial and agricultural enterprises. The adult human body contains about 5-6 kg. most of which blood circulates continuously between the different parts of his body. How much water serves the life of our world?
All the water on the ground are not part of the rock, combined the concept of "hydrosphere." Her weight is so great that it is usually not measured in kilograms or tonnes, and in cubic kilometers. One cubic kilometer - a cube with each edge measuring 1 km., Is constantly busy with water. Weight 1 kg3 water is 1 billion. Ie. The whole earth contains 1.5 billion. Km3 of water that the weight is about 1500000000000000000 tons! For every person accounts of 1.4 km3, or 250 million. M. Drink, do not want to!
But unfortunately, things are not so simple. The fact that 94% of this volume of water make up the world's oceans, unsuitable for most business purposes. Only 6% of the water is a land of which only 1/3 fresh, i.e. only 2% of the total volume of the hydrosphere. The bulk of the fresh water is concentrated in the glaciers. Significantly fewer of their shows under the earth's surface (located in shallow groundwater, aquifers, underground lakes, in the soil, as well as in the vapor atmosphere. The share of the river, from which mainly take the water and people, we have very few - 1.2 thous. km3. It is insignificant total amount of water contained at the same time in living organisms. So the water that can consume a person and other living organisms on the planet not so much. But why is it not end? After all, people and animals are constantly drink water, plants evaporate it into the air and the rivers carry into the ocean.
Blood brings to every cell in your body oxygen from the lungs and nutrients from the stomach. Blood collects wastes from everyone, even the most secluded corners of the body, freeing it from carbon dioxide and other waste, including hazardous substances. Blood spreads all over the body special substances - hormones that regulate and coordinate the work of different agencies. In other words, the blood connects different parts of the body into a single system, in a harmonious and stamina.
Just have a circulatory system and our planet. Lifeblood - water, and the blood vessels - rivers, streams, creeks and lakes. And it's not just a comparison, an artistic metaphor. Water in the world plays a role similar to that of the blood in the human body, and how recently, scientists have noticed, the structure of river network is very similar to the structure of the human circulatory system. "The driver of nature" - the so-called water the great Leonardo da Vinci, it is going from soil to plants, from plants to the atmosphere, the rivers flowing down from the continents to the oceans and returning back to the air flow, connecting with each other the various components of nature, turning them in a single geographic system. Water not only changes from one to another natural component. Like blood, it carries with it a great number of chemicals, exporting them from soil to plants, from the land into lakes and oceans from the atmosphere to the ground. All plants can consume the nutrients contained in the soil, only water, where they are in a dissolved state. If not for the influx of water from the soil to plants, all the herbs, even growing on the richest soils, would have died "of hunger," like unto a merchant man, who died of starvation in the chest of gold. Water supplies nutrients and inhabitants of rivers, lakes and seas. Brooks, fun flowing from the fields and meadows during the spring thaw or after summer rains, collect along the way are stored in the soil chemicals and convey them to the inhabitants of ponds and the sea, thereby linking land and water areas of the planet. Richest "table" is formed in places where carrying nutrients rivers flow into lakes and seas. Therefore, these parts of the coast - estuary - a riot of different marine life. Who removes the waste generated as a result of vital activity of different geographic systems? Again, the water, and in the position of the accelerator, it works much better human circulatory system, which only partially fulfills this function.
Especially important is the role of water purifying now, when a man is poisoning the environment with waste cities, industrial and agricultural enterprises. The adult human body contains about 5-6 kg. most of which blood circulates continuously between the different parts of his body. How much water serves the life of our world?
All the water on the ground are not part of the rock, combined the concept of "hydrosphere." Her weight is so great that it is usually not measured in kilograms or tonnes, and in cubic kilometers. One cubic kilometer - a cube with each edge measuring 1 km., Is constantly busy with water. Weight 1 kg3 water is 1 billion. Ie. The whole earth contains 1.5 billion. Km3 of water that the weight is about 1500000000000000000 tons! For every person accounts of 1.4 km3, or 250 million. M. Drink, do not want to!
But unfortunately, things are not so simple. The fact that 94% of this volume of water make up the world's oceans, unsuitable for most business purposes. Only 6% of the water is a land of which only 1/3 fresh, i.e. only 2% of the total volume of the hydrosphere. The bulk of the fresh water is concentrated in the glaciers. Significantly fewer of their shows under the earth's surface (located in shallow groundwater, aquifers, underground lakes, in the soil, as well as in the vapor atmosphere. The share of the river, from which mainly take the water and people, we have very few - 1.2 thous. km3. It is insignificant total amount of water contained at the same time in living organisms. So the water that can consume a person and other living organisms on the planet not so much. But why is it not end? After all, people and animals are constantly drink water, plants evaporate it into the air and the rivers carry into the ocean.
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