Chapter 571

Among the three stages in the process of life evolution and civilization, the low-level biological stage and the high-level biological stage are the longest and endless ends in the time-space table of the process of biological evolution and civilization. The medium-level biological stage is the transition stage from the low-level biological stage to the high-level biological stage, and it is also the stage in the process of biological evolution and civilization in which human beings begin to evolve civilization and occupy a dominant position, This stage is very short, but it is a key process in the evolution of life on earth. It is the bridge between low-level organisms and high-level organisms, and the unnatural oxidation natural society and natural reduction natural society in the intermediate biological stage are the bridges in the process of life evolution and civilization. In the process of life evolution and civilization, oxygen in the air has always occupied the main content of the process of life evolution and civilization on earth.

Primitive life lived and multiplied on the earth, and finally there was an oxygen accumulation process, forming the biosphere of earth life. Oxygen has become the main part of the atmosphere and an integral part of the life cycle. Biological and abiotic redox almost revolved around oxygen. Except for primitive life, almost all organisms revolved around oxygen. Without oxygen, there would be no life, There will be no vibrant biological world and no evolutionary civilization of human society. Therefore, oxygen is the most important external factor that constitutes the evolutionary civilization of life on earth.

On the earth, the origin of life should be traced back to the evolution and synthesis of the earth's atmosphere. The evolution of the atmosphere is of special significance because it creates conditions for the emergence of life.

In the peaceful years before the end of the day, scientists from all over the world speculated that the evolution of the earth's atmosphere was roughly divided into three generations. The first generation of atmosphere, the primitive atmosphere, may have run away in the early stage of the earth's evolution. The second generation atmosphere is squeezed out by the physical and chemical reaction of the internal materials in the process of the earth's gravity, collision, radioactive decay, exothermic and gradual contraction of the original earth's materials, heavy materials sink into the core, light materials float up, and finally form today's layered structure of the crust, mantle and core. We call it the reducing atmosphere. There is no oxygen in the reducing atmosphere. At that time, the nitrogen in the air may gradually increase and become the main gas of the reducing atmosphere. Biogas, carbon dioxide and water vapor may account for a considerable proportion in the reducing atmosphere. Volcanic eruptions and geological changes can produce a considerable amount of hydrogen, carbon monoxide and hydrogen sulfide. In addition, There are also some rare gases with fairly stable chemical properties, such as argon, krypton, xenon and so on.

In the long geological age, the evolution of life and the evolution of atmosphere are intertwined. The characteristics and composition of the atmosphere are determined by the form of life on the earth. It is completely different from the characteristics and composition of the atmosphere in the case of inanimate. Of course, it is also completely different from the atmosphere of our adjacent inanimate planets and Mars. Life came into being years after the formation of the earth. Oxygen, an important component of the atmosphere, came into being a long time later. Scientists can only carefully speculate on the evolution of life on the earth on the origin of life. About 4 billion years ago, there were only rocks and water on the earth, and the hot sunlight was directly directed to the surface to form a very high temperature, The anoxic atmosphere makes the ultraviolet rays from the sun unimpeded to the surface, and the ultraviolet rays have strong chemical activity.

Various chemical reactions in the atmosphere and the earth's surface have led to the emergence of a large number of organic substances such as amino acids, nucleotides and monosaccharides on the earth's surface with only inorganic substances. These organic substances continue to undergo chemical reactions, and gradually polymerize from simple organic substances into complex organic substances, showing biological macromolecular proteins and nucleic acids, These proteins and nucleic acids are slowly stored and gathered in seawater. After hundreds of millions of years of long-term development, life monomers with self replication function have finally emerged. With the emergence of life monomers, the evolution of life in the process of natural selection begins. Life monomers evolve in more and more complex directions, first primitive single celled organisms, and then in two directions. First, the autotrophic function is strengthened and the motor function is degraded. It has evolved into unicellular bacteria and algae, becoming the evolutionary source of the plant world. The other direction is the enhancement of motor function and heterotrophic function, the degradation of autotrophic function, and the evolution to single-cell protozoa, which has become the evolutionary source of the animal kingdom.

But these calculated knowledge only stays on the known and excavated antiquities. Therefore, in peacetime, some scientists questioned whether there was a more developed civilization before the known civilization, but this civilization collapsed due to various reasons, and even traces disappeared on the earth over time.

This reasoning in peacetime is not groundless. In the 4.5 billion years since the birth of the earth, the earth's creatures have experienced five mass extinctions, alternating life and death, and repeated again and again. The last mass extinction occurred 65 million years ago. Some people infer that there were advanced civilized creatures on the earth 2 billion years ago, but unfortunately they were destroyed by a nuclear war or a huge natural disaster. The vicissitudes of hundreds of millions of years have erased almost all traces of civilization, leaving only a few relics, which has become an unsolved mystery of modern mankind. Some people believe that the destruction of the previous advanced civilization was due to the periodic change of the earth's climate or the periodic disappearance of the earth's magnetic field. When the solar system moves to a specific position in space, the earth will have a climate that is not suitable for human survival periodically. The extinction of dinosaurs 65 million years ago is an example. The periodic climate change of the earth will lead to the periodic origin and evolution of advanced intelligent organisms.

However, some people deny prehistoric civilization. They believe that most prehistoric civilizations come from myths, legends and religious classics, which are criticized by the academic circles as vain. Since the European Renaissance, the academic community has embarked on such a path and made a series of brilliant achievements. Judging by logic, if we think that prehistoric civilization is true, it is tantamount to admitting that religious classics record facts, and the content of religious discourse is indeed absurd to a great extent. Moreover, the C-14 method is widely used in archaeological dating, which can only measure the approximate range within 5000 years. Beyond this limit, there is nothing to do, resulting in the uncertainty of the construction age of many buildings under the current technical conditions.

However, less than a year after the end of the day, the mystery was solved by people. An ancient relic from the depths of the earth solved the mystery that has plagued mankind for hundreds of years.

Ancient god civilization! A prehistoric civilization with ultra-high technology and hundreds of times higher than the current level, but due to an inevitable war, this brilliant civilization was subverted and became an insignificant trace in the history of tens of billions of years.

What Fengya can't imagine is that the stone slab on the cloak's hand is not a super ability or a natural function of the monster, but an ancient source - evolutionary fragment!