Why did a massive extinction of marine life occur nearly 30 years ago 2.6 million years ago?

After billions of years of continuous evolution and development of the earth, it has also undergone great changes after extinction events again and again, according to the mass extinction events that researchers have known, it can be known that in fact, on the planet we live in, there have been five such events, the most famous of which is the mass extinction of dinosaurs. In science, it is widely believed that such a mass extinction was caused by an asteroid collision. In addition to such an event, some researchers have found that as early as 2.6 million years ago, there was an extinction of 30% of marine life.

Although researchers want to find out the cause of this extinction event, they have not been able to find the driving factor of the death, and can only learn from some data that the sea level at that time fluctuated very violently, and the violent fluctuations happened to coincide with the mass extinction event. As a result of such an event, scientists deduced that some of the creatures that frolicked along the coast at that time also decreased significantly, and the number of marine mammals that megalodons could hunt also decreased on a large scale, and entered a new round of competitive evolution.

Although researchers have not found more definitive evidence of what caused this extinction event, some scientists have analyzed a phenomenon called functional diversity, which usually involves organisms and their communities, and the results of the latest research by researchers found that in the extinction event, the functions of the entire marine ecosystem have changed very diversely, with 17% of cases disappearing and 21% of cases changing dramatically.

In the midst of such changes, the impact on warm-blooded animals is enormous, and once such an environment changes significantly, those more large homeothermic animals may easily become extinct. And the researchers also found that in modern times, those larger sea creatures are often vulnerable to human attacks. Moreover, the researchers also came to the conclusion that perhaps humans will cause the extinction of some species, so if we want to keep the earth in a state of ecological balance, human beings also need to make more efforts and improvements, and it may be easier to avoid some mass extinction events.

Because the ocean has changed dramatically, it may also be the survival of the fittest.

Because of the movement of tectonic plates, the environment of the ocean changes, resulting in the inability of organisms to survive.

The squeezing of the plates leads to the loss of biological species.

Because it was influenced by the natural environment at that time.

Because at that time, the earth's environment changed dramatically again.

Because meteorites hit the earth, another ecogenide.

Because human beings have caused serious damage to the environment.

Because of the harsh natural environment, marine life is extinct.

Because there was a natural disaster then.

Because the environment of the ocean has changed.

About 2.4 billion years ago, entering the iron tools, the average temperature of the earth's surface was 15 degrees, and the "large and medium vertical oxygen" event occurred in the atmosphere, which is called stromatolite, which produces a large amount of oxygen in photosynthesis, fills the ocean and rises into the atmosphere, while bacteria believe that life on Earth is "anaerobic organisms", they are fermentation and anaerobic respiration. Thus, due to the increase in oxygen, anaerobic organisms die in large numbers. It was the first mass extinction on Earth.

The Ice Age, which occurred about 700 million years ago, due to the outbreak of large land plants, plants absorbed carbon dioxide and released a large amount of oxygen, because of carbon dioxide and other gases, the methane content was extremely reduced, destroying the key gases that keep the earth warm, the average temperature of the earth's surface dropped to -50 degrees, and the earth has entered a snowball freezing period, so a second mass extinction occurred.

<> about 100 million years ago, during the Sinian period, due to abnormal changes in the earth's environment, land plants occurred**. Plants absorb a lot of carbon dioxide and release a lot of oxygen, just like the last snowball Earth, entering the second ice age. The average surface temperature dropped to 17 degrees, and the Ediacaran event triggered the third extinction of the Dana people.

About 100 million years ago, during the Cambrian period, the fourth mass extinction occurred.

At the beginning of the Cambrian period, there was a serious abnormal environmental event of the carbon cycle around the world, when the eruption of karst gases in the ocean released a large amount of carbon dioxide, methane and other gases to the ocean. These gases travel through the ocean and rise back into the atmosphere. At the same time, the frequent volcanic activity on the earth's surface has also released a large amount of carbon dioxide, methane and other greenhouse gas depletion depletions to the atmosphere, resulting in the average temperature of the earth's surface rising to 29 degrees, and a large number of organisms cannot adapt to the high temperature environment, therefore, resulting in the extinction of 99% of the earth's marine life.

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It is because volcanoes may erupt every time the earth is extincted, and volcanoes will not have much impact on the ocean, and some hungry creatures are also ridges of cherry limbs in the deep sea, so they can be preserved relatively intact.

This is due to the fact that the ocean is very deep and the bottom of the ocean is full of sand, which can be used to preserve the carcasses of marine life.

Because the ocean is relatively deep, the life in the ocean is protected by the seawater, and the impact of these disasters on the sea water is relatively small.