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At present, it can be known that the oldest biological fossils come from nearly 4 billion years ago, although the history of human civilization is only about 10,000 years, but the construction of a huge human country, the traces of human existence are basically impossible to be completely erased, and the statement of prehistoric civilization is the same, if it exists, there will be evidence. Erasing all traces of humanity probably requires the Earth**. Primitive life 3.8 billion years ago can leave traces on the earth, and even if human beings are extinct, there will always be a trace left.
In the history of the earth for billions of years, countless organisms appeared and eventually disappeared. But humans have discovered a large number of biological remains so far, starting from 3.8 billion years ago. Although the formation of fossils is difficult, there are always very few fossils left because of the quantitative basis.
At present, human beings have not yet been able to penetrate the earth's crust, and there are no large pits of more than 5,000 meters dug on the earth, but from the results of the ultra-deep drilling crater in Kola, Russia, it seems that there are abundant animal and plant fossils underground. Because of the depth of the formation, human beings cannot do large-scale development and exploration.
It is difficult to eliminate the traces of the existence of all living things by relying on the movement of the earth's crust, and perhaps only the event that can burn through the earth's crust occurs, and all organic matter is carbonized and burned into gas by high temperature. And such an event unless the Earth is knocked into pieces by a huge celestial body and dissipates in the universe, and the Sun evolves into a red giant star that scorches the surface of the Earth at high temperatures. At that time, the earth will not be suitable for life, and it will be difficult for foreign civilizations to find traces.
Not to mention the number of human beings, the total number of historical and existing populations must be at least tens of billions, plus the large number of civilization appendages created by human civilization, the quantitative base is very huge, and the possibility of all being erased is extremely small. There is also a huge evidence about prehistoric civilizations, and that is the evolution of living things. Evolution is not the same as "progress", the evolution of living beings may be infinite, but precisely because evolution may be unlimited, then the process of evolving from small bugs in the ocean all the way to humans is destined to be impossible to replicate, and IQ is only a way to adapt to the environment, not all organisms develop in this direction in natural selection.
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It would take at least 10,000 years to completely erase all traces of human beings, because the reinforced concrete forests are now very strong.
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If human beings become extinct, it will take at least 5,000 years for the earth to erase the traces of human civilization, because many civilizations made by humans are difficult to erase, such as buildings, etc., which will take a certain amount of time.
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I think it will take tens of thousands or even hundreds of millions of years to erase our human civilization, after all, there are a lot of human beings.
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Humans have been on Earth for 6 million years.
In the 4.6 billion years since the birth of the earth, human beings have been the only highly intelligent civilization on the earth. Humans began to evolve 6 million years ago (6 million-year-old proto-humans were discovered in 2000), and civilization appeared 1 million years ago. Dinosaurs have been on Earth for 160 million years.
Humans have been on Earth for less than a fraction of the time when dinosaurs dominated the planet.
Kenya, Africa, 2000.
Fossils of Proto-Homini (Tügen) were found 6 million years ago in Mt. Tugen, so humans appeared in the Cambrian period more than 6 million years ago.
Homo sapiens began to evolve 200,000 years ago. It has only been 60 million years since humans created writing, and less than 300 years have passed since the rapid development of technology such as electricity.
About 80 million years ago, primates, including humans.
The common ancestor, the Wu giant-headed beast, lived in the same era as the dinosaurs. It wasn't until 60 million years ago that Australopithecus began to appear. More than 50 million years ago, primates differentiated from lower primates, protomonkeys, to higher primates.
33 million 24 million years ago, apes arose from the monkeys of the Old World.
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300 million years. There are footprints from 300 million years ago. It's just that 300 million years of human experience is too much, resulting in a few interruptions in the middle of 300 million years, Darwinian evolution began to evolve 3 billion years ago, or even 4 billion years ago, until 300 million years ago to evolve into high-IQ humans, not from millions of years.
Humans have been on Earth for 300 million years. There are footprints from 300 million years ago. It's just that 300 million years of human experience is too much, resulting in a few interruptions in the middle of 300 million years, Darwinian evolution began to evolve 3 billion years ago, or even 4 billion years ago, until 300 million years ago to evolve into high-IQ humans, not from millions of years.
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Human footprints, things used by human beings, buildings, these traces will still remain on the earth.
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Some of our products and technologies, as well as traces of our survival, will be useful evidence for future generations to study us long after.
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Because of their extremely long lifespan, these nuclear wastes are likely to continue to react for billions of years after humans disappear.
The Earth is speculated to have survived for 4.6 billion years, but how long will it live? Scientists believe that if the Earth is allowed to move freely, it may exist forever, but if other external factors interfere with it, the Earth may have an end of life. The external factor is the sun in the first place, because it is the closest planet to the earth and can have a destiny on the right earth That is to say, all the energy and power on the earth come from the sun, and once the sun has three long and two short, it is bound to affect the earth. >>>More
It mainly depends on how long we can maintain the earth's environment, as long as we can maintain the earth's environment, then we can continue to develop, if the earth's environment is destroyed, and we humans have no solution, then there will be a danger of extinction. >>>More
No, how do I remember that the dinosaurs ruled the earth for hundreds of millions of years? Dinosaurs were a group of animals that lived between 235 million and 65 million years ago and were able to walk upright with hind limbs supporting their bodies, and dominated the world's terrestrial ecosystems for more than 160 million years. Most of the dinosaurs have gone extinct, but the descendants of the dinosaurs, the birds, have survived and survived to this day.
The Earth is a relatively stable planet, and if there is no interference from external factors, it will always exist without the so-called longevity problem. But the sun has a lifespan, and after 4 billion years, the size of the sun will gradually expand, and it will engulf the earth, and then the earth will be destroyed. In addition to the Sun, it is an asteroid impact that can have a substantial impact on the Earth, but it is less likely that the Earth will die in this way.
The current lifespan of the Earth is 4.6 billion years, and it is still unknown how long the Earth will exist in the future. Here are the references. How long is the life span of the earth? >>>More