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When it comes to oceans, almost the entire earth is surrounded by oceans, and people live on only a small part of the land. So as the climate warms, people are worried that if the glaciers melt and the lowest level of the ocean rises, the land will be flooded, and there will be nowhere for humans to go. The point is that from the current human exploration, no life has been found on other planets, and there are traces of the existence of water sources.
And with so much seawater on Earth, there is a theory that the Earth was stored in rocks when it first evolved. Later, after 1 billion years of evolution, it broke away from the rock and became liquid, hence the origin of the ocean.
Those seawaters, which started out in the rocks of the earth, evolved into liquids that became the source of the oceans. It is also said that the ocean was formed because meteorites landed on the earth and brought water vapor from the universe.
Moreover, in the same cosmic galaxy, in addition to the earth in motion, there are also many asteroids in the universe, even the fastest in the universe, which is also moving with a certain trajectory. Some cosmic meteorites may go astray because they are too fast or deviate from their original trajectory during their operation. Some meteorites will hit the earth, and when these meteorites come to the earth, they are also mixed with a large amount of cosmic water, which is why they bring rich water vapor to the earth, which also has the origin of the ocean.
It may be that there is water in the rocks of the earth itself, but not so much, coupled with the entrainment of cosmic debris, then such a vast ocean has been formed.
There is also a saying that the combination of hydrogen and oxygen atoms that we have learned in chemistry all know that after the combination of hydrogen and oxygen atoms will produce a certain chemical reaction, and then water molecules will appear. In particular, the earth has strong hydrogen and oxygen, and the combination of these two special effects makes it possible for the vast ocean to come from this.
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When the glaciers melted, the oceans were formed, and there were many glaciers on the earth a long time ago, and then the atmosphere gradually melted and the oceans were formed.
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Oceans are formed by the movement of the earth's crust, which causes the ground to be lower in some areas, which forms the ocean.
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There is a theory that meteorites came to the earth, and the water on the meteorite formed the ocean, and the ocean covers a large area on the earth.
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The title of this world cave should be for Sokai.
Because in the square kilometer of the earth's surface area, the area of the ocean is about 71 square kilometers. The land area of square kilometers accounts for about 29, and the proportion of ocean area has obvious advantages.
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Water vapor accumulates more and more on the earth, and when it is cold in the air, it turns into clouds. As the ground cools slowly, small droplets of water in the clouds turn into rain and fall. The large amount of rainwater that falls to the ground and finally collects in low-lying places, forming a primeval ocean.
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Seawater occupies the earth's surface area, and the abundant water resources come from **.
One theory is that seawater comes from the "primordial water" contained in the minerals of the earth's interior, and the formation process of seawater is roughly as follows: the movement of the earth's crust causes the eruption of lava, bringing a large amount of water vapor and carbon dioxide to the surface, and the water vapor continues to rise and finally forms clouds, and then rainfalls, which last for a long time, and the low-lying areas of the original crust continue to accumulate water, forming the most primitive ocean.
There is also a view that it may have been brought about by comets and other celestial bodies hitting the Earth when the solar system had not yet stabilized.
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Caused by crustal movements, extrusions, volcanic eruptions, rainfall, and water vapor, the current Haiyang was formed after hundreds of millions of years of accumulation and fusion.
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In the process of formation, the ocean is affected by the impact and squeeze between the earth's crust and the earth's crust, as well as by ** and volcanic eruptions, and by the movement of the earth's crust.
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How the oceans were formed remains a mystery to this day, and scientists have been studying it for decades, so far without coming to a definite conclusion, only putting forward several hypotheses.
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I think the ocean is formed naturally and is also formed by water and water vapor, so I think the ocean is very mysterious.
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The ocean was formed a long, long time ago when millions of years of rain fell on the earth.
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The oceans make up about 71% of the planet.
1.What is Ocean?
Oceans are vast bodies of water, including oceans, bays, lakes, and rivers, and occupy the vast majority of the Earth's surface.
2.Why is the ocean so high on Earth's planet?
The main reason why the oceans occupy such a high proportion of the Earth is that most of the Earth's surface is covered by seawater. And with the continuous development of science and technology, people's scientific research in the depths of the ocean is also becoming more and more in-depth, gradually revealing the mystery of the marine world.
3.The special nature of the ocean
Compared to land, the ocean has its own unique properties and characteristics. For example, seawater has good solubility, it is able to dissolve many substances that cannot be dissolved on land; The oceans are rich in water and biological resources that can provide vital support for human development.
4.The economic value of the ocean
In addition to its special properties, the ocean has great economic value. Many countries rely on the ocean for fisheries, shipping and other industries, and the ocean is also rich in oil and gas resources, seabed mineral resources and polar resources. In addition, there are many untapped resources in the ocean, which can bring infinite imagination to human development.
5.The need for marine environmental protection
There are two sides to everything, and it is important to protect the marine environment while using marine resources. Problems such as pollution and overexploitation of the marine environment have attracted widespread attention, and strengthening the protection of the marine environment has also become a global common responsibility.
It can be said that the ocean occupies most of the earth's surface and is of great significance to the survival and development of human beings. Only by making full use of marine resources and strengthening the protection of the marine environment can we better realize the harmonious development of man and nature.
The ocean is the common home of mankind and the last place of exploration, through in-depth marine scientific research, people can better understand the marine environment, ecology and resources, and effectively develop and utilize marine resources. The rapid development of modern navigation, water transportation, offshore energy and other fields also fully reflects the importance of the ocean in human society.
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How exactly are oceans formed? In fact, this is still a matter of debate in the scientific community until now.
In addition to the well-known meteorite theory, there are four main theories about the formation of oceans.
1.Clouds of gas and dust give birth to the oceans.
Clouds of gas and dust form water precipitates, which are sealed in the interior of the earth as a by-product of the universe, and then these sediments are ejected like steam, forming wide and old water-rich clouds, and then forming oceans.
2.Volcanic activity.
Billions of years ago, there was widespread fire on the earth, and volcanic eruptions erupted water deposits from the earth. It turns into water vapor and eventually forms clouds in the atmosphere.
3.Raw cooling.
This is the idea that once the Earth's otherwise hot temperature drops dramatically, liquid water can form. I think there are many doubts about this kind of argument, and with the current level of scientific understanding and research, this argument cannot be well confirmed, so the credibility is not high enough.
4.There is a vast ancient ocean underneath.
According to numerous scientific studies, hundreds of meters of rock underground contain a large amount of water. And this view is currently accepted by the majority of people. Hunger, and I myself believe in this argument even more.
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The ocean covers 71% of the Earth's area.
The ocean makes up about 71% of the Earth's area. The total area of the Earth's oceans is about 100 million square kilometers, and the average water depth is about 3,795 meters. The oceans contain more than 1.35 billion cubic kilometres of water, about 97 per cent of the planet's total water, and only 2 per cent of it is available for human consumption.
The four main oceans of the earth are the Pacific Ocean, the Ocean, the Indian Ocean, and the Arctic Ocean, most of which are bounded by terrestrial and seabed topography.
The total area of the Earth's oceans is about 100 million square kilometers, and the average water depth is about 3,795 meters. The oceans contain more than 1.35 billion cubic kilometres of water, about 97 per cent of the planet's total water, and only 2 per cent of it is available for human consumption.
The ocean is the general term for the most expansive body of water on Earth. The surface of the earth is divided by major landmasses into vast bodies of water that communicate with each other called oceans, the central part of the ocean is called the ocean, and the marginal part is called the sea, which communicates with each other to form a unified body of water.
The importance of the ocean:
The ocean is an intact body of water. The ocean itself has a huge capacity to carry, dilute, diffuse, oxidize, reduce and degrade pollutants. However, this capacity is not unlimited, and when the local sea area receives more toxic and harmful substances than it can purify itself, it will cause pollution in the sea area.
The ocean has an important strategic position. It is a treasure trove of resources, a variety of resources that can provide mankind with extremely abundant food and huge reserves; It is the main road of transportation, which can provide the most economical and convenient transportation route for human exchanges across the sea.
It is the base for high-tech research in the past dynasties, and an important field for human beings to explore the mysteries of nature and develop high-tech industries. All these advantages have made the ocean a second space for human beings to pursue survival.
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Summary. Dear, Red Sea. As can be seen from the schematic diagram of the six plates, the Red Sea is located between the Indian Ocean plate and the African plate, because the Indian Ocean plate and the African plate are constantly splitting, so the area of the Red Sea should continue to expand to form a new ocean.
Dear, Red Sea. From the schematic diagram of the six major plates, it can be seen that the Red Sea is located between the Yinxiang disturbance ocean plate and the African plate, because the Indian Ocean plate and the African plate are constantly splitting, so the area of the Red Sea should continue to expand and form a new ocean.
The Alps are the largest mountain range on which continent?
The Alps belong to Europe. The Alpine Chain Mountains are 1,200 km long, 130 to 260 km wide, with an average altitude of about 3,000 meters and a total area of about 220,000 square kilometres. Among them, 82 peaks exceed 4,000 meters above sea level, the highest peak is Mont Blanc, with 4,810 meters above sea level, located at the junction of France, Italy and Switzerland.
The Alps are the largest mountain range in Europe, but also a huge watershed, many great rivers in Europe such as the Danube, the Rhine, the Po, the Rhône and so on all originate here, the upper reaches of each river have the characteristics of typical mountain rivers, the water is turbulent, and the water resources are abundant.
Who was called "ancient Hegel" by Engels?
Aristotle.
Called "ancient Hegel" by Engels?
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Oceans are formed by the movement of the earth's crust and the flow of clouds. The movement of the earth's crust forms the ravines of the oceans, the flow of the atmosphere forms rain, and the accumulation over time forms the oceans.
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The oceans on Earth were formed at the beginning of the Earth, when the ground temperature was very high, and a lot of water was evaporated to form rainfall, which then became oceans.
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Most people believe that the carbon dioxide and water vapor ejected from the previous magma are collected in the air, and the water vapor undergoes a series of reactions to form rainfall, and then the rainwater falls on the ground and is stored, and finally forms the ocean.
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When the earth was formed, the water in the primordial material continued to move to the surface, and eventually gradually released, and when the temperature was too high, it became gaseous, and slowly condensed into rain and fell to the ground, forming the ocean.
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The original continental shelf and seafloor formed by the movement of the earth's crust. Later, it rained incessantly and accumulated water.
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Big face encyclopedia, three minutes of popular science, where does the water on the earth come from? How did the ocean come to be?
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The birth of the earth How continents and oceans were formed.
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Recently, the international academic community has been buzzing with discussion about the origin of life on Earth. It is well known that one of the most fashionable theories is that it was comets and asteroids from space that struck the Earth that gave rise to life. Recently, for the first time, scientists have discovered the basis for proving this theory:
An ice comet known as Linear.
Scientists speculate that the comet contains 3.3 billion kilograms of water, which could form a large lake if it were sprinkled on Earth. Sadly, Comet Linéal evaporated into vapor under the blazing sun. Astronomers around the world have observed this process.
So, is the comet carrying water similar to water on Earth? According to scientists, the answer is yes.
Experiments have shown that comets that formed not far from Jupiter billions of years ago contain the same water as the water in the oceans on Earth. Comet Linear was born not far from Jupiter's orbit.
Astronomers believe that when the solar system was first formed, there may have been a number of comets similar to Lienyar"Jupiter region"Fall to the earth. NASA expert John Mamar said:"They fall to Earth like a snowball, not like an asteroid hitting Earth.
Therefore, this impact is a soft impact, only the upper layers of the atmosphere are damaged, and the organic molecules released at the time of impact are not damaged. "
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