The earth is a life planet with perfect ecosystem, and in nature, there is such a law: things compete with nature, the fittest survive. The life history of the earth is about 4 billion years. In such a long life, the earth has given birth to countless kinds of creatures. The evolution of life finally gave birth to intelligent life human.
We all know that the early life of the earth was born in the ocean, and marine life is also the largest population in the earth’s biosphere. It is precisely because water plays an important role in the evolution of life on earth that we call water the source of life, and 70% of the material in the human body is also water.
Although 70% of the substance of human body is water, human beings are terrestrial creatures, and they are afraid of water. We all know that 71% of the earth’s surface area is the ocean. Since ancient times, the ocean has always been a mysterious place. Unfortunately, because human beings can’t adapt to the survival in the water, we can’t really enter the ocean for comprehensive exploration.
Even in today’s era of science and technology, with all kinds of scientific and technological equipment, only 5% of the ocean area we can explore is still there. 95% of the ocean area is still a blind area for human exploration, especially in the deep sea, it is difficult for us to carry out all kinds of exploration. Why is the progress of human exploration of the ocean so slow? The main reason is that it is difficult to maintain breathing in the sea. Once there is insufficient oxygen, it is easy to suffocate and die.
We all know that human beings are mammals and need lungs to breathe. When the human body inhales oxygen from the outside world, the oxygen will first enter the alveoli, and then reach the blood and cells of the body. At the same time, human cells will release carbon dioxide, and then out of the body. This is the lung breathing method of mammals. This method can make mammals survive well on land, but it has both advantages and disadvantages. The disadvantage is that it deprives us of the ability to breathe underwater.
Although there are more advanced oxygen supply equipment, such as oxygen mask. However, divers are unable to carry too many or too heavy objects into the water when carrying out tasks, otherwise it will cause great obstacles. But the oxygen belt is not enough, so the time to carry out the task is naturally short. All in all, one of the major obstacles to human access to the marine world is the problem of breathing.
If we can solve the problem of unsustainable underwater breathing of oxygen, then the pace of human exploration of the ocean will certainly accelerate a lot. Last year, scientists discovered a substance called perfluorocarbon. It is understood that the chemical properties of perfluorocarbons are very stable, have a strong dissolving effect on carbon dioxide, and will not damage the active substances.
Scientists have done such an experiment, the perfluorocarbon dissolved in water, and then put a white mouse into it, the results of 20 hours later, the mice are still alive. From this, scientists can draw a conclusion: organisms can keep breathing in perfluorocarbon liquid for a long time.
I believe many people who like to watch science fiction movies have seen this kind of liquid. In some science fiction movies, astronauts are soaking in a liquid that they can breathe during their long interstellar journey. This liquid can provide long-term breathing, and also can keep the astronaut’s body in a stable and healthy state. We don’t know what kind of liquid can breathe in science fiction movies. Now scientists have discovered that this kind of perfluorocarbon can also breathe.
Scientists named the results of the experiment “whole liquid breathing technology”. The technology is not only effective for mice, but also for human body. According to media reports, a child was born with symptoms of dyspnea. Doctors put it into perfluorocarbon treatment, the child’s condition has not only been effectively suppressed, and even there is a trend of rehabilitation.
Such a major discovery made scientists quickly think of its application in ocean exploration. As long as we can design a new type of underwater diving instrument using perfluorocarbon, we can make the divers stay underwater for a longer time. The area that can be explored will be wider. More importantly, with this new submersible, we may be able to dive into the deep sea freely.
You know, most of the secrets of the ocean are actually concentrated in the deep sea, but now we have to explore the deep sea through some powerful submarines. Moreover, submarines can not enter the deep sea for too long, because in the deep sea, we need to consider another important factor, that is, the strong water pressure.
With a person’s physical ability, we can only dive into the shallow water about 20 meters at most. In deeper areas, because of the strong water pressure, we can’t get down at all. Some people may say, then why can those fish in the deep sea not be afraid of water pressure? There are also some human garbage, why can also sink into the sea?
In fact, the main reason is that the pressure difference between inside and outside is zero. The main reason why deep-sea fish are not afraid of water pressure is that their breathing structure is different from ours. The air pressure in the body of marine fish can keep the same as the external air pressure. In this case, if the internal and external water pressure is zero, the water pressure will not be affected. That’s about the same with the domestic garbage.
But the human body is different. We maintain a standard atmospheric pressure in our body. With the increase of depth, the atmospheric pressure in the ocean will be stronger and stronger than that in the human body. Therefore, we can’t dive deeper into the ocean. We can only let the air pressure in people’s body keep a balance with the increase of depth, so that we can ignore the pressure of the ocean.
In fact, there are two gaps in the long history of human evolution. The forest ape, the ancestor of human beings, lived 14 to 8 million years ago, while the Australopithecus, the direct ancestor of human beings, lived 4 to 1.9 million years ago. Ape man lived between 1.7 million and 200000 years ago. There are two blank periods: 4 million years gap between Australopithecus and Australopithecus, and 200000 years gap between Australopithecus and ape man. So far, scientists have not found any fossils here.
Why do these two blank periods exist? Scientists speculate that the ancestors of humans in these two periods may have lived in the ocean. Since we live in the ocean, it shows that our ancestors can breathe and live freely in the ocean. If this conjecture is correct, it means that human genes still have certain marine survival genes.
It’s just that since humans have been living on land since then, this part of genes may have degenerated or hidden in the long evolutionary years. If in the future, we can activate this part of marine genes again through genetic technology, then human beings will become amphibious advanced life that can live on land and in the sea.
It is very important for human beings to be able to live in the ocean. In the future, if the earth’s ecology continues to deteriorate and the global temperature continues to rise, all the ice and snow in the north and south poles will melt, the sea level will rise sharply, and a large number of land will disappear. Human beings may have to return to the ocean again and live in the ocean. Even if the ecology has not completely deteriorated, after human beings have the ability to survive in the ocean, we can better explore the ocean and exploit its rich resources.
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