Meteorite impact is not the root cause, so why did the dinosaurs become extinct?

Before the emergence of human beings, there were certain organisms on the earth, but they received various environmental changes and disappeared from the earth, such as dinosaurs, which scientists believe were extinct 65 million years ago, and the scientific community also has different opinions about the cause of dinosaur extinction, some people say that there is a shortage of food, and some people say that volcanoes erupted.

At present, the most common theory in the scientific community is that the planet hit 65 million years ago after a meteorite hit the Gulf of Mexico, which caused the earth's climate to change, and the earth's behemoths and dinosaurs began to go to the end of extinction. Did the impact of just one meteorite lead to the extinction of dinosaurs worldwide?

A British research team, based on the latest research, has put forward a new idea, they believe that many subspecies of dinosaurs have already begun to go extinct before this meteorite hit the earth, and the impact of this meteorite has exacerbated the rate of extinction of dinosaurs.

They made a detailed model of the distribution of dinosaur fossils over time for statistical analysis, and published the results, which were recognized by many people after the publication, and they believed that the number of dinosaur populations had begun to decline 24 million years before the meteorite hit the earth 65 million years ago, and it was not a direct result of this meteorite. In other words, this series of phenomena occurred 90 million years ago. They found that the speed of dinosaur extinction had accelerated at that time, and the speed of the birth of new species meant that the evolution of dinosaurs could not catch up with extinction, so the phenomenon of dinosaurs going extinct appeared.

In this model, it can also be seen that among the types of dinosaurs, the evolution rate of the two subspecies of duck-billed dinosaurs and ceratosaurus is higher than that of other species, and in other species, it is very normal for them to go extinct, after all, all species in nature are satisfied with natural selection, survival of the fittest, to maintain the balance of the entire natural world. However, in the process of most dinosaurs' evolution, this balance was broken, and only the duck-billed dinosaurs and ceratosauridae developed normally, and their vitality on Earth was relatively vigorous for tens of millions of years after the meteorite impact.

In fact, in the historical process of the development of life on the earth, duck-billed dragons existed on the earth for a longer time than ordinary dinosaurs. A growing body of evidence suggests that perhaps the absolute cause of the extinction of the dinosaurs was not the impact of meteorites. They believe that the reason why the number of dinosaurs began to decline may be due to the changes in the earth's environment at that time, because the two supercontinents were disintegrating at that time, and the sea level was rising and volcanic eruptions were caused.

The environment has changed dramatically. Because the meteorite impact raised a large amount of dust, blocking the illumination of light, causing a great change in the earth's environment, the fundamental cause of the extinction of the dinosaurs was a great change in the environment.

1. There are many theories about the extinction of dinosaurs. Most commonly, meteorite impacts have caused tsunamis** and some crustal activity. The sky was full of dust and the dinosaurs could not survive.

2. In the study of dinosaur fossils, people found that dinosaur eggs became deformed for a period of time, and even difficult to survive. Probably due to the lack of better reproduction, the dinosaurs became extinct.

3. There is an even more amazing saying, that aliens came to the earth to exterminate the dinosaurs for the sake of human living space.

The extinction of the dinosaurs was due to the fact that the earth was getting colder, many animals and plants could not survive, and the dinosaurs had no food**, so the dinosaurs became extinct.

Dinosaurs became extinct 65 million years ago, apes appeared 33 million years ago, and humans in the true sense of the word formed 2.5 million years ago. Meteorite extinction is just one of the many extinction hypotheses, namely that climate change caused by meteorite impacts wiped out the dinosaurs. Now the more authoritative hypothesis is that only 70% of the dinosaurs actually had a cataclysm 65 million years ago.

and the rest are dying out due to the environment, the climate, and the emergence of new species. By the time humans appeared, their ancestors, the ape-man, had adapted to the environment and climate for tens of millions of years.

<> meteorites are the most likely explanation, and of course they have not been confirmed definitively, but the recent observation of impact craters near the Yucatan Peninsula in Mexico supports the theory that meteorites were powerful, but not directly responsible for the extinction of non-avian dinosaurs and a large number of other species. But the earthquake caused by the severe impact triggered further geological disasters, and from the perspective of the crater of the Yucatan Peninsula, the force of the meteorite impact is equivalent to 10 billion atomic bombs.

**, caused a serious **.

**Wave. triggered a strong geological activity that caused volcanic eruptions worldwide.

While directly causing ecological damage, it is also due to the long-term floating of volcanic ash in the atmosphere, resulting in meteorological disasters on the earth's surface being in darkness for a long time. Earth's vegetation and climate have been greatly affected by dead vegetation for hundreds of thousands of years, resulting in a large number of plant-carnivorous dinosaurs unable to obtain enough food even if they survived geological disasters and climate change; This gradually came to an end, which also caused the carnivorous dinosaurs to lose their most food**.

Of course, most other animals are in a similar situation, so in this mass extinction.

Not just non-avian dinosaurs extinct.

rather, it is the vast majority of the higher biological species on Earth, as well as mammals.

and birds, both of which have only a few survived this mass extinction, and are in the development of a new generation.

Now the reason for the extinction of the dinosaurs is only to blame the meteorite impact on the earth for the time being, or because many traces of the impact have been found, and a detailed analysis has been made, but it is only a hypothesis, and the real truth has not yet been discovered.

Yes, the main reason for the extinction of dinosaurs was the impact of meteorites on the earth, which led to severe volcanic eruptions, and the environment in which dinosaurs lived suffered serious damage, which eventually led to the extinction of dinosaurs.

It was indeed caused by a meteorite hitting the Earth. Because at that time, after the impact, the earth's crust moved. The dinosaur couldn't stand the high-intensity tremor and died.

How did dinosaurs go extinct? Scientists have been debating this. There are two popular theories about the extinction of dinosaurs.

The first is that it was the extraterrestrial meteorite that hit the Earth, which led to the extinction of the dinosaurs. The diameter of this meteorite is about 10 kilometers, and the diameter of the Chicxulub crater formed by its impact is 180 kilometers.

The second is the volcanic eruption theory. Because traces of a massive volcanic eruption 66 million years ago have been found in India. Some scientists believe that it was the large-scale volcanic eruptions that triggered the earth's climate change, and the dinosaurs were unable to adapt to the new environment, so they went extinct.

So, which one is reliable? According to the report, scientists at Yale University in the United States concluded that the culprit that caused the extinction of the dinosaurs 66 million years ago was a giant meteorite fall, not a volcanic eruption, as previously thought. According to the American scientist, it was the meteorite in the Gulf of Mexico that hit the Earth that triggered the extinction of the dinosaurs.

The scientist's explanation is that the volcano had erupted long before the extraterrestrial meteorite hit the Earth, and it had an impact on the Earth's ecological environment. That is, after the eruption, the dinosaurs were still unharmed. And the meteorite hit the earth, causing a global catastrophe and the extinction of the dinosaurs.

Dinosaurs are reptiles that appeared in the Mesozoic era, they have huge bodies, well-developed limbs and long tails, there are many types of dinosaurs, generally divided into herbivores and carnivorous, there are also omnivorous dinosaurs. Dinosaurs generally lived in open areas of forests on lakeshore plains. Although dinosaurs lived on Earth for a long time, humans did not discover their fossils until the 19th century.

As scientists from Yale University in the United States said, "The extinction of the dinosaurs was caused by the impact of extraterrestrial meteorites", and this is the only reason. Perhaps, the extinction of the dinosaurs will have a major revelation for human development.

Some scientists believe that the ancestors of modern penguins evolved immediately after the extinction of the dinosaurs. The evidence they gave was the discovery of the oldest penguin species, the "diving bird", which was close in size and proportions to modern penguins, in Chatham Island in the southern Pacific Ocean. Of course, after the extinction of the dinosaurs, many new species appeared.

The ancestors of human beings, early Homo sapiens, lived before this year, and late Homo sapiens only began to appear about 40,000 or 50,000 years ago. Compared to dinosaurs, humans have been around for a very short time. However, humans have the ability to transform nature.

Especially with the development of space technology, human beings will look for extraterrestrial civilizations and gradually realize planetary migration. Some experts believe that as long as planetary migration can be realized, even if a meteorite hits the earth, it is impossible for humans to repeat the mistake of the extinction of the dinosaurs.

This statement is correct, if it were not for the meteorite impact, the dinosaurs would not have gone extinct, if not instantaneously, it was because of the impact caused extinction, it is only a matter of time.

This is not very true, because some dinosaurs did not go extinct, but just evolved, like fish in the sea.

I don't think that's true, because this matter is still under investigation, so we must look at it rationally.

The extinction of the dinosaurs was one of the most famous mass extinction events in Earth's history, occurring about 66 million years ago at the end of the Cretaceous period. Scientists generally believe that the mass extinction was caused by a meteorite about 10 kilometers in diameter hitting the Earth, causing huge volcanic eruptions and climate change. Here are some of the reasons why meteorites that may have caused the extinction of the dinosaurs:

** and volcanic eruptions caused by collisions: When a large meteorite hits the earth, it will produce extremely high energy, releasing huge heat and pressure, which may cause disasters such as ** and volcanic eruptions.

Air and water pollution: Meteorites that hit the Earth can trigger huge dust and gas eruptions, resulting in massive air and water pollution that disrupts the balance of life and life.

Climate change: When meteorites hit the Earth, they release large amounts of gas and dust, which can block sunlight when they enter the atmosphere, causing global temperatures to drop, leading to the destruction of the ecological environment and the extinction of species.

In short, a meteorite impact on the Earth could lead to a series of catastrophic consequences, and the extinction of the dinosaurs was one of the results of a combination of these factors.

Chicxulub Crater.

Chicxulub Crater is a crater impact remnant found in Yucatan, Mexico, or the Yucatan Peninsula, and was once the largest crater on Earth (the largest crater ever found is the largest crater ever found beneath millions of years of thick ice bed: Wilkes Land, a 483-kilometer-wide crater that is 100 million years old). ）；

Li Yang, a paleontologist and physicist from China, caused a sensation in the international paleontological community in 2009, when he and his Chinese team found a high concentration of the rare element iridium in the K-line strata of the Chicxulub crater 10,000 years ago, which exceeded the normal content by 232 times. Such a high concentration of iridium can only be found in meteorites in space, and the Earth itself cannot exist. According to the accurate determination of the iridium content around the Gulf of Mexico, it was an asteroid-like material that not only hit the Central American region of the earth, but also broke through the earth's crust, causing the earth's internal magma to erupt, and the supervolcanic eruption caused by the impact, from the isotopic content of the Gumara rock, the power of the eruption was much higher than the maximum energy of the Yellowstone supervolcano (the diameter of an ordinary crater is several hundred meters, and the diameter of the mouth that was impacted this time is more than 148 kilometers). The entire earth is covered with thick volcanic ash and poisonous gases, which prevents sunlight from penetrating the atmosphere to reach the earth's surface, plants are unable to photosynthesize, and the atmosphere has extremely low oxygen levels. The combination of these factors led to the mass extinction of the organism. In the past, the academic community discussed the theory of the impact of alien celestial bodies and the theory of volcanic eruptions separately, but both of these academics have considerable flaws, the alien celestial bodies say that the impact alone is not enough to affect so severe, so long, and so far (global), and the volcano theory, the volcanic activity on the earth itself is many and violent, but it is not enough to cause such a large extinction, including the Yellowstone supervolcano, and the argumentation direction and evidence provided by the Chinese scholar Li Yang perfectly answer the long-term questions of the international paleontological community, It is the combination of the two that could cause such a major mass extinction on Earth.

As the ruler of the earth, human beings control the fate of the future direction of the earth, but when there were no human beings in ancient times, who was the ruler of the earth? It's a dinosaur. So where did the giant meteorite that exterminated the dinosaurs come from?

Although dinosaurs no longer exist and are now extinct, a large number of dinosaur fossils found on the earth can also be inferred that dinosaurs at that time were like overlords on the earth. However, the dinosaurs that were extremely strong for a while could not escape the fate of extinction in the end, and the outside world has different opinions about how the dinosaurs perished, among which the more mainstream theory is that the demise of the dinosaurs was caused by meteorites hitting the earth. However, some scientists have come forward to refute the claim that meteorites hit the earth and caused the extinction of dinosaurs.

Because if it was a meteorite that hit the earth and caused the extinction of the dinosaurs, then the size of this meteorite must be extremely large. But this does not conform to the characteristics of meteorites, because meteorites are some small stars or rock fragments in the universe that enter the earth out of orbit, and enter the earth through the friction of the atmosphere, and the volume will be reduced a lot, can such meteorites really make the dinosaurs extinct? Some scientists believe in another theory, that is, the extinction of the dinosaurs at that time may have been caused by a star similar to the sun.

Why do scientists say this? Because in the northern part of the Yucatan Peninsula in the Gulf of Mexico, scientists have found a huge impact crater, the average length of this impact crater is 180 kilometers, and the time is also more than 60 million years ago, which can also correspond to the extinction of the dinosaurs. So scientists believe that more than 60 million years ago, maybe the sun was not the sun it is now, or maybe there was another sun.

This sun-like star collided with Earth for unknown reasons, and the massive destructive force produced in an instant caused the extinction of the dinosaurs on Earth.

Although this is only a scientist's speculation, if a huge star had not hit the earth more than 60 million years ago and caused the extinction of the dinosaurs, what other powerful forces could have caused the extinction of the dinosaurs? I don't know what your own speculations do readers and friends?