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Life on the earth has changed from generation to generation, before the formation of human civilization, the earth has experienced 5 mass extinctions, and the closest one to us should be 65 million years ago, the dinosaurs that ruled the earth, and with an asteroid with a diameter of more than 10 kilometers after hitting the earth, it caused a series of disasters on the earth to have a chain effect, resulting in the dinosaurs that ruled the earth for hundreds of millions of years disappeared directly on the earth, also due to the extinction of the dinosaurs, It was only later that the possibility of mammals, that is, human beings, ruling the earth.
Compared with dinosaurs, human beings have a relatively short time on the earth, only a few million years, while dinosaurs have a time of 100 million years, after the disappearance of dinosaurs 65 million years ago, before the emergence of human beings, there is a total of more than 60 million years, so in this time period, what creatures are on the earth? Who rules the earth? Could it be that during this interval, there was no life on Earth?
Scientists believe that there may have been the following creatures on Earth at that time, the first of which was the Pruce crocodile. This is the closest to human beings to rule the earth, about 8 million years ago, a very large mammal, once appeared on the earth their bite force and strong, just the skull is more than two meters long, once in the age of dinosaurs to feed on the emperor crocodile, and the Prussian crocodile its combat power can be compared with the second, after the disappearance of the dinosaurs they became the master of the earth, their bite force can reach about 18 tons, in the same period there are almost no natural enemies.
The second is the ancient lizard, through the fossils unearthed now, it can also be known that about 40,000 years ago, there was a ferocious creature called the ancient lizard on the Australian continent, it is also a kind of reptile, and their size is very huge, although there is no hard back shell, but ** is very hard, the weight can reach at least 6000 kilograms, 6 meters long. After being bitten by an ancient lizard, even if it is possible to escape from its mouth, it will die due to the gradual erosion of the toxin.
The third is the Titan Monty Python. The Titan Python appeared 60 million years ago, it is also the only creature that can be seen in modern society, they are almost the same as modern pythons, about 12 meters long, the ancient Titan python may be longer, it can swallow prey 5 times larger than its own size.
From this point of view, in the period between the extinction of the dinosaurs and the emergence of humans, the earth was ruled by some huge creatures that could not evolve in modern environments. For a variety of reasons, some of them have become extinct on Earth, and some have evolved into new species. In the modern environment, it is no longer possible to evolve a creature of this size.
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Life on Earth is passed down from generation to generation. Before the formation of human civilization, the earth experienced 5 mass extinctions, the closest should be 65 million years ago, when the dinosaurs that ruled the earth were extinct. After an asteroid with a diameter of more than 10 kilometers hit the Earth, it caused a series of disasters on the Earth and had a knock-on effect.
The dinosaurs that ruled the earth for hundreds of millions of years disappeared directly from the earth. This is also due to the extinction of the dinosaurs. Let later mammals and humans rule the planet.
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In the 65 million years between the disappearance of the dinosaurs and the appearance of humans, it was microorganisms and large animals that ruled the earth, and the power of microorganisms was very strong.
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First birds ruled the earth for a while, then slowly ruled by large mammals, and finally until humans appeared.
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Tens of thousands of years ago, the earth was not ruled by humans, but by a giant creature called a dinosaur. Dinosaurs were so large and powerful that in those days they had few natural predators. It stands to reason that such creatures should be able to survive on Earth for a long time, after all, they are too powerful.
However, because of a catastrophe, these creatures that once ruled the earth became extinct, and now only dinosaur fossils are left on the earth that scientists can study. Based on these dinosaur fossils, scientists conducted a series of studies. With the continuous improvement of the scientific method, people gradually understood the appearance and habits of dinosaurs.
Some people will ask, dinosaurs are so powerful, what kind of disaster can make dinosaurs extinct, according to this question, there are two theories, one is that the planet hit the earth, and the other is that aliens came to the earth to take away the dinosaurs. People prefer the first statement, though.
Humans have survived for thousands of years since evolution. During these millennia, humanity has constantly developed its own level. Slowly, humans landed in the universe and studied outer space, but no matter how hard they tried, they were never able to find traces of aliens.
It is not correct for aliens to come to Earth and take the dinosaurs away. If the aliens had taken it away, humans would have found some traces on Earth, but until now humans have not found any signals about aliens. The idea of an asteroid hitting the Earth is convincing, because in the place where the dinosaurs went extinct, humans discovered craters and also found that there were volcanic eruptions at that time.
This kind of scene is not imagined by humans, but there is actual evidence, thousands of years ago there was indeed a catastrophe that destroyed the dinosaurs, and the most favorable evidence for the extinction of the dinosaurs is the crater.
Asteroids hit the Earth
The most scientific explanation for the extinction of dinosaurs is that the asteroid hit the earth, some scientists believe that the extinction of the dinosaurs is very likely to be related to a large meteorite (planet) at that time, according to scientists' research, in the Cretaceous period, there was a large meteorite with a diameter of about 7-10 kilometers hit the earth's surface, and caused a large **, which had a very great impact on the environment, and many creatures, including dinosaurs, were extinct in the event of the planet hitting the earth.
Volcanic eruptions
Some scientists believe that the volcanic eruption on the earth at that time led to the extinction of the dinosaurs, because the volcanic eruption would produce a large amount of carbon dioxide, which would cause the earth's rapid greenhouse effect, and at that time, all the volcanic eruptions on the earth may have released a large amount of salt, the ozone layer rupture, and harmful ultraviolet rays irradiated the earth's surface, causing a large number of organisms to perish.
Climate change
Some people think that dinosaurs are warm-blooded animals and are not suitable for survival in cold conditions, but 65 million years ago, the earth's climate change trend was very large, when the temperature dropped significantly, and dinosaurs had no warm organs such as hair, so they could not adapt to the climatic conditions at that time, and all the creatures similar to dinosaurs were frozen to death.
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According to the most mainstream theory, the extinction of the dinosaurs was caused by the impact of a huge asteroid on the Earth 65 million years ago, and the huge amount of dust caused by the impact obscured the sky.
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Because of the earth's geology, there are huge tectonic plate movements, and mountains suddenly appear on the plains, resulting in fewer swamps and random changes in the climate. Dinosaurs, which had no food, were gradually becoming extinct and were dying out.
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According to our current research, we humans have been living on this earth for about 300 years. This seems like a very long time for us humans. But compared to the time of the earth's existence, it can be said to be very short, because the earth has been born for 4.6 billion years.
And strictly speaking, it took us humans thousands of years to become the master of this earth. In other words, we humans only rule this earth for 30% of the time that dinosaurs rule this earth. Because dinosaurs ruled the earth for hundreds of millions of years, how long can humans dominate the earth?
In fact, strictly speaking, we humans are not yet the masters of this earth. Because according to the scientist Kardashev, the division of the level of civilization in the universe. In the first level of civilization, to dominate a planet is to be able to control the climate on the planet at will, as well as the environment of the earth, and so on.
In general, everything on this planet, they can control. But obviously, we human beings have not yet reached this level, so the time for us human beings to dominate this earth depends on the "mood" of the earth's nature and this universe.
We know that the extinction of the dinosaurs was caused by the bad "mood" of this universe. Because 65 million years ago, the universe sent us an asteroid with a diameter of 10 kilometers. This asteroid crashed on our earth, and the ** and shock waves generated directly caused most of the living things to die at that time.
At that time, the overlord of the earth, dinosaurs were also one of them.
So now, another asteroid will hit the Earth. Then we human beings, as well as the creatures on this earth, may be more than lucky. Although our human beings are now relatively advanced in science and technology, we can monitor the situation above the earth in real time.
But if it's the kind of asteroid that killed the dinosaurs, then we humans may face two situations. One is that we discovered it early and then continued for months to change the asteroid's orbit. Change success and live if you succeed.
Then the other is that we humans find it difficult to change the orbit of this asteroid, so we dig a crater to prevent meteorites, and then stay in it until the asteroid calms.
Then some people say that since meteorites came to the earth from space, then we humans can go to space, and we humans still have a space station. However, this is unrealistic, because the International Space Station also needs energy from the Earth. And in space, there is also the radiation of the sun and various rays.
If there were a gamma-ray burst, all of these stations would be destroyed.
But for now, our planet is still safe. Not surprisingly, we humans should rule this earth longer than the dinosaurs.
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After the extinction of the dinosaurs, before the advent of man, the ruler of the earth: birds and mammals.
Moa became extinct about 500 years ago and was once the overlord of the land, because more than 60 million years ago, the individual mammals at that time were not large, and most of them were burrowing, similar to rats.
The moa was once the largest of New Zealand's many birds, with an average height of 3 m, taller than today's ostriches. Feeds on terrestrial clump mammals.
Birds don't rule the earth for long.
Later, for some reason, the number of moa birds decreased and eventually became extinct, and in addition to the increase in the size of mammals, and the lack of many species is widely distributed and adaptable. Mammals subdued Zheng Shendai birds to become the new overlords on land.
And the overlords in the sky have always been carnivorous birds; The overlords of the ocean are the big predators, whales and sharks!
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The age of dinosaurs should play a key role in the improvement of the land, so many and huge animals on the earth, every day the digestion of food and excrement will improve the soil on the surface of the earth, because the soil is fertile plants will grow more and more, plus the excretion of high-grade high-quality fertilizer also makes the living space of the dinosaurs full of vitality, after a long period of 100 million years so that the earth's various organisms and plants continue to hybridize and renew, the number of all species may increase exponentially from the time of the dinosaurs, and also make all kinds of animals have the basic consciousness of the jungle, Animals began to enter and exit in groups to prevent being eaten by strong enemies, but dinosaurs are only power overlords and not intelligent creatures, and there will be no new changes to the earth in the long run.
Since the planet hit the earth, the earth has become calm for a while, and the creatures have begun to evolve from aquatic organisms again, after a long process, human beings have appeared, because human beings are advanced intelligent creatures, and have the ability to change everything in their lives, human beings have quickly reached the current level of civilization in 10 million years, due to the emergence of the leapfrog computer, the solution to the earth's survival plan is further optimized, and human beings have no ability to change the celestial bodies and the universe. Dinosaurs ruled the earth for hundreds of millions of years, and finally due to the impact of an asteroid on the earth through the ten axioms, the earth's atmosphere was dusty and blocked the sunlight, causing the death of plants and trees on the earth, and finally led to the dinosaurs losing their living environment and perishing, and disappeared from the earth.
According to scientific research, this is extremely slow for hundreds of millions of years, because the environment in which dinosaurs live is very superior, resulting in dinosaurs living carefree and without evolution, and can only resign themselves to fate and wait for the tragedy of extinction in the event of natural disasters. In ancient times, we humans evolved due to the deterioration of the weather and the great changes in the environment, which caused apes to come from the trees to the ground and adapt to the new environment. Nowadays, science and technology in all aspects of mankind are highly developed, and all kinds of diseases and viruses that endanger mankind are no longer human opponents, and the friendly living environment that human beings have taken the initiative to build is very perfect.
If there is another event of an asteroid hitting the earth, with the existing technology of mankind, it can be detected in advance, and it is completely possible to change its orbit and avoid the tragedy of colliding with the earth. Even if there is an unknowable disaster, it can be completely dealt with human wisdom and human high technology, so human beings will always live on the earth, and the earth will always be the home of human beings.
No.. It's a marine creature ... The ocean first covered the entire continent in the hope of that.
It is very likely, because human beings evolved through low-level civilizations, and it is very likely that the current low-level creatures will evolve into high-level creatures in a few hundred million years.
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