Didn't the earth have oxygen from the beginning, will the oxygen disappear in the future?possible

The earth is a livable planet, and the key to livable is to have oxygen.

Of course, life does not necessarily have oxygen to survive, but only with oxygen can it evolve a more advanced life form. Because the more complicated the form of life, the greater the energy consumption, and the oxygen itself can release a large energy, and how to use oxygen is the key to evolution and development of life. After billions of years of evolution, "aerobic creatures" have been able to leave the earth to explore the universe, and "anaerobic creatures" are still bacteria. Although oxygen is good, it does not exist on the earth from the beginning. In the early days of the earth, there was no oxygen on the earth. The earth was extremely unstable at that time. Volcanic eruption can be said to be the daily landscape on this planet, and a large number of volcanic activities have released a large number of harmful gases.

With the eruption of volcanoes, gases such as carbon dioxide, sulfur dioxide, and methane rushed out, and these substances naturally became the original composition of the early earth atmosphere.

Slowly, the earth began to cool, volcanic activities were no longer so frequent, and the earth's atmosphere also changed subtle changes. I don't know when it started, the original life appeared on the earth, and no one knew how they spontaneously formed. Today, this is still the most difficult puzzle. These tiny blue bacteria can release oxygen through photosynthesis, so the atmosphere of the earth begins to change. I do n’t know when it started, and I do n’t know what it was. The number of blue bacteria began to show explosive growth, so a large amount of oxygen was released into the air.

The emergence of oxygen has changed dramatically.

The first thing that started to change was the atmosphere of the earth, because the emergence of oxygen quickly curbed the gathering of volcanic gases, and the atmospheric structure quickly changed. Immediately afterwards, a large number of oxygen occurring also affected the material structure of the earth. Oxygen is oxidized. Many substances can reflect it with it. Plant growth rare nutrients. The earth has never appeared from oxygen to oxygen. The whole process lasted about 500 million years. This period was called "large oxidation incident" by scientists. After the earth had oxygen, it entered a virtuous circle, and life began to evolve rapidly, and the earth became incredible.

Although oxygen is good, it does not exist on the earth from the beginning. This has led scientists to think about another problem, that is, "Will oxygen always exist on the earth?"

The University of Tokyo and Georgia University of Technology performed analog analysis through computer modeling, and the results showed that oxygen will eventually disappear from the earth. Why does oxygen disappear from the earth? This is a complicated question, just like how oxygen is born on the earth. The reason why the earth can become a livable planet is an important factor in addition to oxygen, which is the sun, and the sun is not the same as a star. As time goes by, the sun will become hotter. The heating of the sun directly affects the temperature of the earth's atmosphere, and the increase in atmospheric temperature will affect the level of carbon dioxide in the atmosphere.

The increase in the temperature of the earth will lead to the decomposition of carbon dioxide in the atmosphere, and the decline in carbon dioxide content will directly affect the plants and bacteria that produce oxygen.

Plants and bacteria that perform photosynthesis are reduced due to the decline in carbohydide levels, which then affects the oxygen content in the atmosphere, which enters a vicious circle. Of course, this vicious circle is not caused by the evolution of the sun, and the more important factor comes from the earth itself. Scientists believe that the global sector will gradually dive into the mantle rock layer, which will accelerate the release of volcanic gases, and the release of these gas will greatly increase the consumption speed of oxygen, thereby promoting the further reduction of the oxygen content of the earth.

The computer simulation of scientists use two different sets of scenes, one set with a biosphere, and the other does not have a biosphere. However The ultimate disappearance.

Moreover, scientists also believe that once the earth's atmosphere enters the stage of rapid oxygen attenuation, the whole process will be very fast. It only takes only 10,000 years to completely disappear from the earth. However, this process will not come too fast. According to computer simulation predictions, all this should happen after 1 billion years, so we don't need to worry now. And even if the oxygen on the earth disappears, the earth will not become a dead silence, because those anaerobic bacteria will still survive the earth, but the earth should have no time to enter a new cycle, because the evolutionary stage is later. The sun will make the earth no longer livable.

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