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It's a bit unfounded, classmates.
The universe has existed for 15 billion years, the earth has existed for 4.6 billion years, and humans have existed for 5,000 years.
The Earth's former owners, the dinosaurs, have dominated the Earth's terrestrial ecosystem for more than 160 million years, and humanity is just getting started.
What's more, the human brain can think.
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The existence of the world is not defined by the existence of human beings, and the existence of human beings does not exist in the world.
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If you can exist for as long as the world can exist. Imagine that when you die, will this world still exist?
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As long as people pay more attention to environmental protection and social harmony, this world can exist for a long time!
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It's hard to say, but it's certain that you will kill yourself.
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No one can say for sure, even if we know how long it will be, it's not our generation's business.
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Don't worry, we won't see it in this life, I guess there will be 500 years.
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<> the destruction of human beings, like all species on the earth that have long been extinct or are in the process of extinction, is an ironclad law that cannot be escaped. Although human beings are the only highly intelligent animals on the earth, they are also doing their best to develop high technology, so that they can use technology to achieve human reproduction and immortality, or immigrate to space planets, and also endanger species.
It can protect the inextinct species. But they still can't escape the law of extinction and rebirth of life on earth. Of course, according to the current situation, human beings may continue to exist for hundreds of thousands of years, or even longer, and the destruction of human beings in recent years cannot be ruled out.
Then it's really the main question; How long will it take for new humans to appear after humans disappear on Earth.
This question. Mine: After the extinction of humanity is gone, there will be no new human beings.
Because species, all species of life on earth, including plants, etc., have never been born with the same species after they have disappeared from extinction, and this should also include humans. Of course, after the old species disappears into fossils, it will never regenerate, but the new species that replace them will continue to regenerate and evolve.
As we all know, since the earth's living species, a total of tens of thousands of species have become extinct, but in billions of years, no extinct species has ever been reborn, and human beings can only be reborn.
Learned in the stone. Individual 10,000-year-old prehistoric animals have survived to this day, and humans have also listed them as living fossils.
of. It can be seen that human beings cannot escape the cycle of extinction, but it is impossible to have a new human being. However, what are the differences between the new advanced intelligent species that replace humans and humans, and what they look like, it is really difficult to imagine and unimaginable.
It's a matter of probability. Evolution is contingent and not very intervenable, it is nothing more than genetic adjustment of heredity in terms of sex, but this is artificial and natural biological evolution.
Referring to the evolutionary history of human beings, it can be estimated to be about 4 million years, but everything is according to the history of human evolution.
This probability is also infinitely close to zero, and it is unlikely that animals other than humans will evolve into higher animals, and they will not have the appearance and behavior of humans.
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If humanity dies, it will reappear on Earth after a long time, and as long as there are living things, there will be humans.
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The extent of human damage to the earth is still very light, but the degree of damage to the ecological environment is already very serious.
Over the past two millennia, 110 species of mammals and 139 species of birds have disappeared from the earth, and 1 3 of them have disappeared in the last 50 years. Of these extinct animals, at least 3 4 were caused by direct human killing, and the other 1 4 was caused by human destruction of their habitat.
There are more than 794 species of wild animals in the world that are endangered due to the lack of due environmental protection, and more than 300 plant species of 76 families are threatened with extinction.
The above information is only known to mankind at present, and it is not known how many unknown species are disappearing.
The destruction of the earth by humans is insignificant in the history of the earth, but the destruction in the history of the earth's ecology is unprecedented.
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After the Industrial Revolution (the previous devastation, which can only be said to be very slight).
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Indicates that this is seen spatially.
After the extinction of humanity, the human architecture on Earth will also decay rapidly. The first is those wooden houses, all of which will disappear in 100 years.
And the city's skyscrapers, made of glass and steel, will collapse in 200 years. Brick, stone and concrete houses will last longer, but will also collapse after 1,000 years.
If not, the bridge might last 200 years, but even the world's largest arch bridge will eventually collapse after 1,000 years.
Within 250 years, human-built dams will also collapse. The heavy metal pollution left behind by humans will also be gradually diluted after hundreds of years.
Although radioactive materials such as nuclear waste can last up to 2 million years, no one will associate them with humans in the vast expanse of the earth.
In fact, if humans disappeared from the face of the earth for 200,000 years, it would be difficult to find evidence that humans ever lived.
Thousands of years from now, Earth will return to a prehistoric wilderness.
Without air pollution, the walls of cities would be covered with moss, creepers, poison ivy, and carrots, cauliflower, cabbage, Brussels sprouts, cauliflower, and other delicacies that were once indispensable on the human table would be reduced to wild vegetables.
Only radioactive materials and a handful of man-made chemical contaminants will last longer – they are an invisible heritage of humanity.
After the disappearance of human beings from the earth, almost all the remnants of civilization left by humans will disappear in 20,000 years, and in 50,000 years, all human remains on the earth will become difficult to trace archaeological clues, because glass and plastic will all dissolve.
However, man-made chemical pollutants will also collapse within 200,000 years, leaving no "human product" to be found on Earth.
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There will be things left with strong vitality, such as bacteria, mice, cockroaches, etc.
During this time, the Earth's environment will slowly recover, until it is possible for higher animals to survive before humans can reappear.
This process is very long.
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A new civilization may be a new world ruled by species smarter than humans.
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