If humans suddenly disappear, when will the matter we are left behind decompose?

Although human beings are the masters of the earth, they are also extremely fragile and insignificant, and wars, diseases, and natural disasters can easily wipe human beings off the earth.

Although the earth has changed greatly under the transformation of human beings, if human beings suddenly disappear from the earth, then the traces left by human beings will not be left for long.

For example, human vehicles, skyscrapers, and all kinds of garbage, airplanes, automobiles, high-speed trains, etc., made of steel, will deteriorate and corrode within 20 years if they are not maintained by humans.

Wooden buildings will collapse within 100 years, concrete skyscrapers will gradually collapse due to geological subsidence within 200 years and eventually be buried by plants, and a large amount of garbage left by humans will gradually disappear or be buried under weathering.

To sum up, if humans disappear from the earth, then it will only take 10 million years for the earth to erase the traces of humans, but there are three exceptions, even if humans disappear for 100 million years, they can still prove that humans came.

The first thing that can confirm the existence of humans is fossils, which are the remains, relics or remains of ancient organisms that remain in rocks, most commonly bones and shells.

In addition to fossils, amber retained in resin for special reasons can also provide evidence of the existence of living things, after scientists found the ancestor of the snake in a piece of amber that is 100 million years old, which is also the first time that humans have found snakes in amber.

The second substance is uranium, uranium is a natural element, which exists in nature for a long time, but only uranium that has been mined and used by humans will reduce its concentration, so uranium is one of the best proofs of human existence.

The last thing is the sedimentary rock, the earth is "alive", the planet has been in constant activity, and the terrible natural disasters we feel - **, volcanic eruptions, are proof of the earth's activity.

If human beings disappear from the earth, under the movement of the earth's crust, the buildings and living utensils left by human beings will eventually be squeezed to the bottom of the ground.

But in the process, the collapsed buildings form piles of rubble that form rocks in regular shapes, and the metal materials, although decaying, also form regular bands of metal cation enrichment, and eventually, these deposited objects gradually form the rocks of the "Anthropocene".

After just one day, the entire planet will be plunged into darkness.

Once most fossil fuel power stations run out of fuel, they shut down and cause cascading blackouts around the world. Things like solar panels and wind turbines can still generate electricity in some areas of the planet, but eventually, they will stop working in a few months or years.

If no one uses the electricity they produce, the nuclear power plant will shut down and go into automatic safety mode to prevent a possible meltdown of the reactor.

Similarly, the absence of power means that the pumps in the metro system will stop working. The tunnels in the metro system will be filled with water.

Livestock either starved to death or fled their homes and began to look for food.

Pets who are still trapped inside the house can eat in the kitchen, but eventually they will run out of food** and their only option is to run away and look elsewhere for food.

But the truth is that many animals will not survive. Many dog and cat breeds simply do not fit into this new environment, and they are hunted by animals such as wolves.

Animals such as rats and cockroaches thrive on leftover food, but once depleted, their populations plummet.

In fact, some animals would have gone extinct without humans. Such as head lice.

Head lice have evolved to feed only on human blood. If we disappear, head lice will join us.

There is food everywhere that will rot. Without electricity, there would be no refrigeration, and without refrigeration, our food ** would begin to decrease.

The dairy product will spoil within a few hours. The fruit will ripen and rot. As the fruit ripens, they release hydrocarbons called ethylene, causing the surrounding fruit to ripen and deteriorate faster.

Airborne spores can land on produce and develop into mold. The meat will also start to rot. Animals like flies and this will start eating meat products.

The smell of rotting meat also attracts other animals, such as mice.

After more than a week, the spent fuel pool inside the nuclear power plant will boil due to the heat from the fuel rods. The fuel rods themselves caught fire and burned.

Radiation equivalent to 20 core values will be released into the environment and will not be safe for miles in each direction. This will also lead to some nuclear reactors drastic**.

After the disappearance of human beings, there will be fewer and fewer traces of human life on the earth over time, until finally the city will be recovered by nature.

The earth will return to its most primitive state, full of dense forests, all kinds of wild beasts, and dangers.

I think the earth is going to get better. As the climate warms, glaciers will not continue to melt, some endangered animals may not disappear, and eventually the air will become fresher.

Human beings are seemingly ordinary and very powerful creatures, ordinary are ordinary in the experience of birth, old age, sickness and death, when natural disasters and wars strike, they can easily erase human beings from the earth, powerful and powerful in having a unique brain, can not only think about problems, but also create high technology. It is not difficult to find that the earth has completely changed under the large-scale transformation of human beings, and many high-rise buildings have emerged, and everyone can really feel the power of science and technology.

The extinction of the dinosaurs 65 million years ago seems to be vivid, human beings are full of infinite worries about the future, and some people even put forward a hypothesis that if human beings suddenly disappear from the earth one day, what material can prove that human beings have existed? I have to say that this is a question worth pondering, many high-tech will slowly corrode and age over time without human use, but scientists have found that there are three substances, no matter how they will not disappear, which are the three? If you find these 3 substances, even if humans disappear for 100 million years, you can prove that they once existed!

3 substances that never go away.

First of all, the first type is fossils. Fossils are direct evidence of the existence of human beings, and experts often use fossils to reconstruct the prototypes of those prehistoric creatures, and when humans die, they also leave fossils, and the remains of the body are buried under the soil over time. If you want to prove that human beings have existed, you only need to dig up these fossils, conduct DNA testing, and use high technology to determine the identity of human beings, and also indirectly indicate the traces of human existence on the earth.

The second material is sedimentary rocks. The earth is in motion all the time, causing many disasters, such as volcanoes, **, tsunami eruptions, are proof of the earth's activities, in case human beings disappear from the earth, the buildings left by human beings will be squeezed under the surface, forming piles of rubble, rocks of different sizes, although metal materials will decay, but some metal words with cationic negative pole bands, these sediments will form traces that can never be erased. If you can find these rocks, you can prove that humans existed.

The last substance is uranium. Uranium is a natural element, very common in nature, generally we rarely see it, only the uranium concentration that has been mined by humans will decline, the concentration that has not been mined will be maintained, if uranium is found, you can judge whether it has been mined by the concentration, once the concentration drops, it can be proved that human beings have excavated, which is one of the best proofs.

These substances can indirectly prove that human beings once existed on the earth, and have high research value, and many people think of the future of mankind through this question. It is not known how the future of human beings will go, whether it will be the same as the end of the dinosaurs, it is all in everyone's hands, seeing the current status of the earth, many people's hearts are not a taste, the greenhouse effect caused by global warming has an impact all over the world, and if it continues like this, human beings are really not far from disappearing.

Ceramic, plastic, etc. Because ceramics are very stable, and plastics are difficult to decompose, these substances can be proven to exist even if they can disappear for 100 million years.

Fossils, rocks, uranium, all of which can prove that humans have existed on Earth for 100 million years, are fossils, rocks, and uranium.

These substances have made humans disappear for 11 years, and they can also prove to exist, such as fossils, fossils can be preserved for a long, long time, such as the previous dinosaurs, it is because of the fossils he preserved that people know.

Fossils, fossils are direct evidence that human beings have existed, and sometimes fossils are left behind, and the mutilation of the body will be difficult to support over time, and then if you want to prove the existence of human beings, you only need to dig up these fossils and use high technology to determine them

Fossils are direct evidence of human existence, experts often use fossils to restore the prototype of prehistoric creatures, and human beings will also leave corresponding fossils after death, and only need to dig up fossils for DNA testing to prove it.

The sedimentary rocks can also prove that if humans disappeared, then the buildings left behind would be squeezed under the surface, forming rocks of various sizes, and if these rocks can be found, then they can also prove that humans existed.

In addition, uranium, a very common metal element in nature, will only decline in its concentration if it has been mined, so if uranium is found, it can be judged by the concentration whether it has been mined, and it can also prove whether it has existed in humans.

Even if humanity disappears for billions of years, these 3 things on the earth can still prove that humans have come.

0-48 hours:

Most of the lights that rely on chemical fuels will be turned off.

The windmill will go until the lubricant is exhausted.

The nuclear power plant will be switched to energy-saving mode.

The solar panels will continue to work until they are full of dust.

Hydroelectric power will continue to work.

3 days:- The subway will start flooding because the pumps will not work for 10 days:

Pets trapped indoors will starve or become dehydrated or even die.

Most of the livestock, like chickens and cows, will die because no one feeds them.

Large dogs may escape and hunt smaller dogs and cats.

1 month: The water that cools the nuclear power plant evaporates, eventually leading to a nuclear accident.

Nuclear contamination will kill millions of animals, but the planet will eventually recover.

Year 1: - Sputnik will fall, but only wild animals will have a chance to see it.

25 years: 75% of roads and sidewalks will be covered with vegetation.

Large pet dogs and wolves can mix to create new breeds.

The earth's air will be very clean.

Cities like Las Vegas and Dubai, will be completely covered in sand.

300 years: Metal and steel structures will be eroded, such as the Eiffel Tower and the Golden Gate Bridge will collapse.

The steel bars in the concrete can expand to three times their size, causing most of the building to collapse.

There will be a large number of swamps on the planet to provide habitat for wildlife.

Marine mammals and other organisms thrive.

500 years: All modern cities will collapse, leaving very few traces.

10,000 years: Some buildings, such as the pyramids and the Great Wall of China, are still intact.

50 million years.

The only traces left by humans are plastic bottles and broken glass.

100 million years: Plastic bottles and glass are also decomposed.

300 million years: Traces of human existence are completely gone, and even if aliens visit, it is not known that humans ever existed!

What is the meaning of human existence? This is a question worth pondering, the earth has a history of 4.6 billion years in the entire history, and human beings have lived on the earth for a long time, and over time they have become the dominant ones of the earth, and in the entire universe, human beings are extremely small creatures. However, such a small creature has the power to destroy the earth.

It is impossible for any kind of life on the earth to survive forever, and it will gradually disappear with the change of ambient temperature, so many people have put forward such a bold speculation, if human beings suddenly disappeared from the earth, how should we prove that we once lived on the earth? Scientists have also put forward three conjectures about this problem. If human beings suddenly disappear, these three things can be used to prove that human beings really existed!

First of all, the first is fossils, fossils are the best verification of archaeology, from ancient times to the present, many archaeologists have found a lot of biological fossils, can prove that these animals really exist, even if the fossils have been weathered for a long time, but it will not be completely wiped out, human beings reproduce rapidly on the earth, with a huge population, to prove the signs of human survival, it is still extremely simple, just through fossil investigation, you can clearly identify.

The second thing is the elemental uranium. The element uranium is the most important material of the nuclear **, it itself does not undergo chemical reactions, even if it is placed in the soil for a long time, there will be no change, it is this kind of thing, it can better prove that human beings really exist on the earth, if it is processed, there may be many unexpected discoveries, the earth is very likely to have other advanced civilizations.

The third kind of thing is a variety of items made by human beings, many items are made by human beings, these items can retain thousands or tens of thousands of years of history, such as plastic bags, put them in the soil, it can never be degraded, these items made by human beings, can prove that human beings have really survived on the earth, many things are buried under the surface of the earth due to geological decline, completely isolated from the air, so its preservation period is quite long, All of these methods are effective in proving that humans have really survived on Earth.

Of course, these are just human assumptions, human beings have lived on the earth for a long time and are not short, there is almost no great possibility of complete extinction, the earth provides a suitable environment, climate, etc., to give birth to so many human beings, in the whole nature, human beings and animals only need to live in harmony, and always pay attention to the health of the earth, human beings simply cannot disappear one day, although there are currently many people who are destroying nature and the earth for their own selfish desires, as long as it is properly controlled, What do you think about the fact that our planet will become a better place, and there will be more surprises waiting for us to discover in the future?