Before the appearance of human beings, dinosaurs once ruled the earth for 65.438+0.6 billion years until extinction. After knowing the history of dinosaur extinction, many people are also worried: when will humans become extinct?
Speaking of dinosaurs, I believe everyone is familiar with them, because dinosaurs once ruled the earth for 65.438+0.6 billion years. In the e-sports circle, there is such a wise saying: "A generation of versions, a generation of gods." In fact, this sentence is also very appropriate in the biosphere.
Before dinosaurs appeared, the earliest life on earth appeared in the ocean, and then slowly developed to land. Dinosaurs lived in Jurassic and Cretaceous. During these two periods, the vegetation on the earth was dense, and the species on the land multiplied in large numbers. In this context, naturally huge dinosaurs gradually became the overlord of the earth at that time and the top of the biological pyramid. When other creatures saw dinosaurs, they had to run away. In this way, dinosaurs ruled the earth for 65.438+0.6 billion years.
However, due to successive natural and man-made disasters, dinosaurs finally followed the footsteps of trilobites-genocide. In fact, there are different opinions about the reasons for the extinction of dinosaurs in biology. Among these numerous statements, several are reasonable.
First, the impact of asteroids on the earth led to the extinction of dinosaurs. This view was put forward because people found traces of asteroids hitting the earth during the investigation. So experts come to the conclusion that hundreds of millions of years ago, an asteroid hit the earth, causing a large number of regional fires, earthquakes, tsunamis and volcanic eruptions. This is the reason why a large number of dinosaurs died. Later, people proved this statement in constant investigations.
The second theory is that the extinction of dinosaurs originated from the climate change of the earth. According to experts' investigation, dinosaurs experienced a long ice age in their later years. During this period, the global climate decreased, and many animals and plants became extinct because they could not adapt to such climate change. These extinct animals and plants are the food on which dinosaurs lived. Due to lack of food, giant dinosaurs died in large numbers because they couldn't find enough food.
The third theory is that other creatures caused the extinction of dinosaurs. According to the survey, at the end of dinosaur life, creatures that ate dinosaur eggs appeared, and these creatures ate a lot of dinosaur eggs as food. And dinosaurs gradually came to an end because they could not reproduce.
Hundreds of years ago, human beings firmly believed that they were created by God and protected by God. Later, however, Darwin's theory of biological evolution broke people's thinking, and people began to know that there were countless earth overlords before human beings, but they all became extinct for various reasons. So the saying "natural selection, survival of the fittest" began to become popular in the world.
This statement, after breaking the aura of God, has also caused people to start to have a panic similar to losing their lips and teeth. People began to think: will the end of the world come suddenly one day, and will mankind, like dinosaurs, slowly lose its position at the top of the biological pyramid or even become extinct in the great changes of the world?
In such a panic, people even calculate the so-called doomsday time according to the time of genocide in the past. The "20 12 eschatology" which was wildly circulated a few years ago is one of them.
Some people believe in the so-called "eschatology of mankind" and even worry about this moment all the time. Others are indifferent. They think, "the earth and the sun will die sooner or later anyway, let alone human beings?"
Regarding the above two different views, although there are positive and negative attitudes, the view is the same, that is, human beings will become extinct one day. Then the question comes: when will mankind become extinct? Why did humans become extinct? People are human because they can't budget the future like the legendary gods. Although humans can't estimate the time of human extinction, we can speculate why humans died.
The extinction of mankind may be due to natural disasters. People always say that man can conquer nature, but in fact, human beings are very weak in front of nature. An earthquake with a magnitude of 10, a worldwide tsunami, or the impact of an asteroid that is not too small may lead to the extinction of mankind. After all, tens of thousands of people died in history because of the earthquake and tsunami, a city was buried for tens of thousands of years because of volcanic eruption, and genocide occurred because of the climate change and asteroid impact on the earth. And this may also be the cause of human extinction.
In addition to the natural disasters mentioned above, there may be a worldwide virus infection that leads to the extinction of mankind. For example, those depicted in A Trip to Busan and The Walking Dead. Besides natural disasters, man-made disasters may be another possibility of human extinction.
Throughout human history, the time of peace is very short, while other times are wars. Since the discovery of the New World, many human behaviors have become worldwide behaviors. And the war is likely to become a world war. During the period of 100 in the last century, there were two world wars. Perhaps many people still remember how many people died in the war and how many people were killed by the atomic bomb.
Today, many countries have developed nuclear weapons. If on a certain day, some countries take out super lethal nuclear weapons because of war, I don't know how many people will die. As we all know, the lethality of nuclear weapons never only lies in the sudden death of a large number of people, but also has a huge negative impact on future generations in this region. In this way, although mankind will not perish in a short time, it will gradually become history in the passage of time.
Taking history as a mirror, we can know the rise and fall. From the extinction of dinosaurs and other creatures that dominated the earth before, human beings can gain many experiences and lessons. And human beings can also find ways to prevent human extinction from these experiences and lessons and speculation about the future, such as strengthening the prediction of natural activities and the ability to resist natural disasters.