First of all, the female shark started to move away from the edge of the circle.

It took only two seconds for the great white shark to reach XiaoLongNu, and then prepared to launch an attack. What the audience didn''t expect was that when the great white shark opened its mouth and was ready to bite, it seemed that it was stimulated by something. Suddenly, the great white shark suddenly swung its tail and swam away in the distance. Even other sharks nearby seemed to be scared by something and turned around as fast as possible The body ran, and in the blink of an eye, the surrounding area was completely quiet, and all the sharks were trying to escape towards the distance.

The audience outside are naturally a little confused about this incident, but in fact, we are very clear about what happened.

In fact, it''s very simple. Just like those piranhas, we just made some electric current in the water. But in fact, the current is much smaller than when dealing with piranhas, so there is no such terrible arc, just a weak current.

About why sharks are scared away by such low voltage In fact, the reason is very simple, I think the electromagnetic induction ability of sharks is too good. Just like dogs can''t tolerate strong perfume, people don''t respond to it. The reason is that dogs have a nosed nose, so what they feel is not so strong that dogs feel too sharp. In the same way, piranhas can''t sense the current in the water, so we have to cook them directly with high voltage. But you don''t have to deal with sharks. Because sharks are very sensitive to electrical signals, ultra-high-power electromagnetic waves are enough to make them feel uncomfortable and take the initiative to avoid them. Even if the ultra-high-power electromagnetic waves can directly roast the piranha, the voltage is still much lower.

Although the audience outside don''t understand what happened, they do know one thing very clearly, that is, the sharks have run away, and now they can''t pose a threat to us at all.

Without the threat of sharks, we easily broke through this extremely large water tank. However, although we didn''t feel much, the audience outside finally found out the problem.

Those who had noticed the time before now took out their watches to check the time, and soon they got an approximate time for us to go into the water. So far, we have been in the water for exactly 15 minutes, during which time we have not been exposed to any air at all. Although we don''t have such activities as fierce fighting underwater, we have been moving all the time, and the power needed to move underwater is very large. It is absolutely impossible for us to adapt to the underwater environment by keeping our breath closed. Although whales can hold their breath for two hours under water, the proportion of their lungs to the body is extraordinary large, so that''s not our reference. Our lungs are obviously not as large as the lungs of whales, so we can''t theoretically hold our breath much longer than humans do.

"They definitely have organs like gills." Some audience firmly said: "normal people can not have such a long time of breath holding ability, this is absolutely not normal."

"Yes, they must have organs like gills."

The audience''s chatter soon came to an agreement because the scene was so obvious. We have been under water for more than 15 minutes, and there is still no hypoxia reaction. This is not simply explained by the ability to close the air.

Just after the audience''s comments converged, we came to the next gate, and then, as before, we went through the gate and entered a closed compartment. In fact, these compartments are not used to separate the water flow from each other. For example, when we entered the shark section from the piranha section, the function of the two isolation doors is to reduce the water exchange volume caused by our back and forth travel, and the reason is that the water quality on both sides is different.

The piranha is a kind of freshwater fish, while the great white shark is from the sea. The water in those two sections is fresh water and sea water, so it needs to be isolated. Now we are facing this isolation chamber is also used to isolate water, but it not only separates fresh water and sea water, but also insulates heat.

When we open the quarantine No, it should be said that I found the problem when I touched the door handle on the other side of the compartment. The door handle I hold is very cold, which means that the water temperature behind the door must be very low.

The water temperature of the two sections just came over is about 28 degrees, which is already quite warm. After all, the water temperature in nature is usually not so high. I''m not sure about the temperature behind the door, but I think it''s probably zero.

Sure enough, when we opened the door, we immediately felt a cold and piercing water flow out of the gate, and we braved the cold and stepped into the water over there and closed the gate again.

The temperature of this side of the water is really zero, because the top of the tank can see the obvious thick ice layer, which indicates that the water temperature here may not even reach zero.Although primary school textbooks say that the temperature of the ice water mixture is zero, the premise of this setting is under a standard atmospheric pressure. Pressure changes the freezing point of water, and if the pressure is high enough, it won''t freeze even at very low temperatures. Of course, the pressure here is not so high as to make the water temperature here maintain below zero degree. Moreover, the temperature is not entirely due to the artificial pressure applied here. More importantly, the water here is flowing and the speed is very fast. Water in high-speed flow is difficult to freeze at the same temperature, so the two properties together cause the sub zero water environment we are in.

Although the temperature is only one degree lower than that of ordinary ice water, the temperature here can really kill people in minutes according to human standards.

Normal people in the state of unprotected immersion in ice water below 10 degrees, usually adhere to the time will not exceed 10 minutes. Of course, people who like winter swimming have strong cold tolerance and can stick to it for a long time, but it is also gradually developed by others. And the normal person before the winter swimming is to do preparatory activities for protection. If you throw a winter swimming champion into the ice water without any preparation, he won''t last a few minutes. Moreover, the first winter swimmer can only hold on for a short time, usually only a few minutes to go ashore, otherwise it will be frostbite. After the time needs to be a little bit longer, so that the human body has a process of adaptation.

For example, we have just suddenly entered the water below zero degree from 278 degrees. This temperature change is not ordinary, and we have no interest in winter swimming. If normal people encounter this situation, they will be frozen to death within a few minutes.

However, the above situation is only according to human standards, but it has no impact on us. It''s not that we are not afraid of cold. Of course, our ability to withstand cold is much better than that of human beings. But the key is that we use electromagnetic control to stabilize the layer of molecules on our body surface and keep them under a stable vibration frequency. The essence of temperature is the frequency of molecular motion. The more active the molecular motion is, the higher the temperature is. And low temperature means that the molecular motion decreases. Of course, zero does not mean that the molecular motion stops. The real state of molecular motion stopping refers to the zero degree of thermodynamic temperature scale, which is the so-called absolute zero degree. At this temperature, molecules will stop shaking completely, that is to say, Brownian motion, as we all know, will stop at absolute zero. At this time, matter will disintegrate and enter the fourth form - condensed state - outside of gas, liquid and solid state.

What we''ve just done is that the molecular vibrations on the surface of the body are stabilized at a fixed frequency, which is equivalent to maintaining the surface temperature. At the same time, because we suppress the vibration of the surface molecules, so that the molecular kinetic energy is no longer transmitted, so our heat loss is very low. In this mode, we don''t need to consume a lot of energy to fight against low temperature. After all, our way of resisting cold is different from that of human beings.

In fact, there are two main reasons why human beings are frozen to death. First, body fluids freeze; second, chemical reactions lag.

Low temperature will make the liquid into a solid state, that is to say, the blood and other tissue fluids in the human body will gradually freeze. But the damage starts before the blood freezes. We all know that the blood can transport oxygen, but actually it is not only oxygen in the blood. In fact, our blood is also dissolved in a large number of other gases, and the solubility of gases in the liquid is directly related to the temperature of the liquid.

When the external temperature is too high, the body''s heat production can not keep up with the heat loss, and the body temperature will start to drop. As the blood temperature drops, the blood in the blood vessels will start to separate out various gases. At the same time, not only the gas, but the chemical substances in the blood will gradually precipitate out, and crystals will appear in the blood vessel wall. It is not ice, but the salt in the blood Learn to crystallize. When the blood temperature is high, these substances can be dissolved, but when the temperature drops, these things will be separated out.

The gas separated from the blood can lead to vascular cavities, which can lead to cardiac arrest in severe cases. Crystals in the blood can clog blood vessels. And, even if that doesn''t happen. Blood, which has lost a lot of chemical solutes, has lost its function as a blood. It can no longer transport substances, that is to say, the circulatory system of the human body has stopped working.

If things get worse and the blood itself starts to freeze, it''s all over. Usually people freeze to death before they get to this part, but there are exceptions, such as local frostbite. Because of the hypothermia in some areas, the human body adjusts itself, the muscles tighten, and the capillaries are closed, which can reduce the speed of heat loss. However, the blood in the local area will be cut off, and then the blood in the blood vessels in this area will freeze and freeze. After that, the frozen blood will expand and open the blood vessels, resulting in the complete paralysis of the blood circulation system, and the surrounding cells will also crack due to low temperature freezing And then even if you resume asking questions, the injury has already taken shape, and that''s where frostbite comes from.

However, the above conditions are mainly the result of rapid temperature loss. Generally, the body does not cool so fast, so the real cause of freezing death should be that the chemical reaction stops.

The human body is a pile of complex compounds, constantly chemical reactions, which is the essence of life. However, many chemical reactions require a certain temperature. Organisms are very sensitive to changes in temperature. For example, when the human body has a fever, the body temperature only rises a few degrees, which can prevent the reproduction of bacteria and viruses in the body. So fever itself is actually a way for the human body to resist external invasion. As for the control of fever temperature, it is good to protect the brain, because if the temperature is too high, it will damage the brain nerve and cause other problems.Just a few degrees of temperature difference can greatly inhibit bacterial reproduction, which shows how sensitive organisms are to temperature. Cold blooded animals are better. They have adapted to the low temperature. However, the thermostatic animals, that is, creatures with constant body temperature like human beings, will have problems with chemical reactions in their bodies once their body temperature changes widely.

The main problem caused by low temperature is to slow down the chemical reaction speed. People need to consume energy when they are alive, just like a huge factory with many electrical appliances. Every cell of the human body needs energy, and these energy is generated by chemical reactions. Low temperature will lead to a decline in the speed of chemical reactions, and even some chemical reactions will stop completely. Once the chemical reactions in the human body slow down or stop, the cells will lack energy, and then the body temperature will further drop. Then the situation will continue to deteriorate, forming a vicious circle. Finally, when the speed of chemical reactions in the human body is reduced to the point that it is unable to maintain life, people will die.

Our dragon clan is better than human beings in this respect. Because we are designed as weapons, the chemical exchange used for energy supply in our body is a substance that can work at extremely low temperature. That is to say, low temperature will only reduce our physical strength and will not freeze to death. At least, it will not freeze to death because of the chemical reaction. Of course, this low temperature also has a range. We have to kneel down when we reach zero.

In addition, there are two essential differences between our dragon cells and human cells. First, our dragon cells have double mitochondria, one of which is responsible for chemical reactions. Like humans, they transform chemicals in the cell fluid to provide energy. However, we have another mitochondria, which can also transform chemical energy. But it is different from the other one in that it can absorb electric energy and thermal radiation, directly transform energy to provide cell power, and even reverse the above two kinds of energy to synthesize energy substances that can be used by ordinary mitochondria. In other words, if we do not have food for a long time, charging is OK. Of course, the voltage should be well controlled. After all, we are not a complete robot. Charging is very slow. It is only an emergency maintenance system, not our main energy supply mode.

Second, in addition to the mitochondria, there is a deification factor in our dragon cells. Of course, this is the name of everyone. In fact, this thing is B13 strain.

When carrying out the transformation of longzu, B13 virus will infect cells first, then inject RNA, and then carry out cell regeneration to form longzu cells. When this step is completed, the Dragon DNA within the cell will undergo incomplete division, producing a new RNA core, and then automatically generate a protein protective layer to encapsulate it. In this state, it feels like every cell of our dragon tribe always has a B13 virus strain, but in fact, this strain is always in a dormant state.

So, what does this thing do?

The answer is - emergency.

When dragon people die, RNA viruses will carry life marks into the virus community state. At this time, our individuals may die, but our thinking will be uploaded into the Dragon mind network. If the mental network is disturbed or other reasons can not be uploaded, our will will will be carried by these viruses and stored in RNA in the form of archive Department. After that, as long as the virus is found and stimulated, it can use RNA to reverse the DNA information and reproduce the whole person. Of course, this function is confidential. Except for our dragon clan and a few researchers, very few people know about it even within Longyuan.

In addition, this RNA virus strain not only can play the role of emergency record after death, but also has a function of acting as a battery.

When, for some reason, our body''s internal circulation system doesn''t work, causing some areas to be unable to supply energy. These RNA strains will begin to reverse their power, supporting short periods of activity or helping to repair wounds. All of these capabilities can help us fight low temperatures.

Of course, we still don''t like the cold, so we use electromagnetic control to close the molecules around the body, instead of using the body''s resistance to resist low temperature.

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