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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.
01. The most important factor affecting human survival is the environment. What is the biggest impact on humanity on Earth? There is no doubt that it must be the environment, if the environment is destroyed, then we human beings will lose the basis of survival, it will not be too long, human beings will also be extinct, we must understand one thing, is that we need the earth, we need the earth's environment.
02. After the earth's environment is destroyed, human beings can still rely on science and technology to survive for a period of time. During the period when the earth's environment was just destroyed, humans could still support the goods for a while, but only a small number of people could survive, and these people would not last long before they died. After the destruction of the earth's environment, the diversity of animals and plants has decreased, and food is basically impossible to grow, and under such conditions, human food and water resources are in danger of being insufficient, and it is very difficult to survive for a long time.
03. Humans will also become extinct one day. Human beings will one day become extinct like dinosaurs, this is a problem that cannot be avoided, unless our science and technology are developed enough at that time to migrate to other planets, otherwise when the earth's environment is destroyed, we human beings can hardly seek extinction, the dinosaurs that ruled the earth for tens of millions of years at that time, because of a disaster, we humans have only lived on the earth for thousands of years, of course, we also have the advantages that dinosaurs do not have, that is, wisdom, we can make spaceships, see if we can find a new habitable planet.
Summary: I think that if the destruction continues at this rate, the earth's environment may be completely destroyed in a few hundred years, and now the global temperature is rising, the glaciers in the Arctic and the Arctic are melting, the permafrost in the Arctic is melting, and viruses and methane are gushing out.
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Scientists have shown that humans can survive on the earth for hundreds of millions of years, because after 100 million years, the sun will change dramatically, the sun will become a red giant at that time, and the earth will be engulfed due to the expansion of the sun.
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If we do not take into account the progress of human science and technology, and human civilization can continue forever without accidents. Based on the fact that the sun has 5 billion years to live. Humans should be able to survive on Earth for another 5 billion years.
But I think that in the future, after the development of human science and technology reaches a certain state, the earth can be taken away casually. So that human beings can live on the earth forever.
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Human beings can live on the earth for tens of thousands of years, because the earth's resources are still relatively abundant.
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The history of mankind, if counted from Ramacouscos, has passed more than 10 million years; If you count from Australopithecus, about 4.4 million years have passed.
The genus species of Ramaustralopithecus is Punjabi Ramaucos (r?).punjabicus)。Ramaustralopithecus has a short face, a short jaw, and an inconspicuous protruding jaw; The incisors, canines, and premolars are smaller, and Ramaustralopithecus has no tooth gap, and the entire tooth arch is open backward on both sides, like a parabola; The occlusal surface of the tooth is wrinkled, and the third molar is smaller than the first.
1. 2 molars, incisors with a moderate forward inclination, bipedal walking. These characteristics are similar to those of humans but different from those of apes, so many scholars believe that Ramaustralopithecus is the ancestor of humans.
Ramaucus was followed by Australopithecus. It was dated to about 4.4 million years ago. The physical characteristics of Australopithecus are similar to those of humans, the tooth arch is parabolic, the canine teeth are not prominent, and there is no tooth gap; The thumb can be held with the other four fingers, and natural tools can be used; The location of the foramen magnum of the occipital bone is close to the base of the skull**, the pelvis is wider than that of apes, and it is able to walk upright; Enlarged parietal lobes and may have primitive language ability.
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There may not be an exact time. Because the transition from ape to man is not done in a day, there is no clear dividing line from ape to man. If you count from the human grandmother Lucy, it is about 3 million to 3.5 million years.
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Humans have lived on Earth for about 4.4 million years.
The first fossilized skeleton of hominid "Aldi" was unearthed in Ethiopia in 1992, and this creature belongs to the progenitor species of ape, which lived 4.4 million years ago.
Aldi is the oldest human civilization ever discovered, and he lived more than 1 million years earlier than the oldest primitive man ever discovered, Lucy.
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Humans have been living on Earth for about two or three million years.
The world's earliest ape-man fossil was discovered in 1891 on the Indonesian island of Java, dating back 60 to 800,000 years. The Javanese ape-man, together with the Peking man discovered in Zhoukoudian, China, in 1927, was once recognized as the "earliest" human in the world.
In 1972, fossilized ape-man skulls, leg bones and stone tools were discovered in Kenya and dated to 2.6 million years ago. In 1973, it was reported that fossils of ape-man were found in Ethiopia about 3 million years old or 3 million years ago.
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