What percentage of water on Earth? The hydrosphere of the planets and even components

Water plays a crucial role in maintaining the vital activity of any organism. This substance can be presented in three aggregate States: solid, liquid and gaseous. But that liquid is the main internal environment of the human body and other organisms, since this flow is all biochemical reactions, and in it are all the structures of the cell.

What percentage is water on earth?

According to some estimates, about 71% of the Earth's surface is water. She is represented by oceans, rivers, seas, lakes, swamps, icebergs. Separately are the underground water, as well as pair of air.

Out of this number only 3% is fresh water. Most of it is in the icebergs, as well as in rivers and lakes on the continents. So how many percent of Earth's water is in seas and oceans? These pools are the places of accumulation of salt H2O, which is 97% of the total.

If it was possible to collect all the water that is in the earth, in one drop, it would have taken approximately 1,400 million km³, and fresh was going to be the a drop volume of 10 million km³. As you can see, fresh water is 140 times less than on Earth than salt.

What percentage is fresh water on Earth?

About 3% of all fluid is fresh water. Most of it is concentrated in the icebergs, in the upland snows and groundwaters, and only a small amount falls on the rivers and lakes of the continents.

Actually, fresh water is divided into available and unavailable. The first group consists of rivers, swamps and lakes, and includes waters of the surface layers of the earth's crust and a couple of atmospheric air. All that man has learned to exploit.

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What percentage of fresh water on Earth refers to is unavailable? First and foremost is the large reserves in the form of icebergs and mountain snow cover. They constitute the majority of the fresh water. Also the deep waters of the earth's crust form an essential part of all fresh H2O. Neither he nor the other source people have not learned to use, but this is a big benefit, because people can't even properly dispose of such an expensive resource as water.

The water Cycle in nature

The fluid Circulation plays an important role for living organisms, because water is the universal solvent. This makes it the main internal environment of animals and plants.

Water is not only concentrated in the human body and other creatures, but also in water pools, seas, oceans, rivers, lakes, swamps. The cycle begins with fluid loss such precipitation as rain or snow. Then the water accumulates and then evaporates under the influence of the environment. It is clearly noticeable during drought and heat. The circulation of the liquid in the atmosphere depends on how much percent of water on earth is concentrated in the solid, liquid and gaseous state.

Cycle has a great ecological importance, because the liquid circulates in the atmosphere, hydrosphere and the earth's crust, and thus self-cleaning. In some reservoirs, where the level of pollution is high enough, this process is of enormous importance to sustain life, organisms ecosystems, but restoration of the former “purity” takes a long period of time.

Origin of water

The Mystery about how there were first water, can't work out is already a large amount of time. However, in the scientific community there are several hypotheses that offer variants of the formation fluid.

One such speculation relates to the time when the Earth was in its infancy. It is the decline of the “wet” meteorites that could bring water with you. It accumulated in the bowels of the Earth that gave rise to the primary hydration shell. However, scientists are unable to answer the question, what percentage of water on Earth was contained in that distant time.

Another theory is based on the terrestrial origin of the water. The main impetus for the formation of this hypothesis was the finding of a relatively high concentration of heavy hydrogen deuterium in the seas and oceans. The chemical nature of deuterium is such that it could be formed only on the Earth by increasing atomic mass. Therefore, scientists believe that the liquid is formed on Land and is of cosmic origin. However, researchers who support this hypothesis, you still can't answer the question, how much percent of water on Earth was 4.4 billion years ago.