How did humans come into existence on Earth?

About 3 million to 3.5 million years ago, humans appeared on Earth. The prehistoric period of human history is the first stage of the development of human society, that is, the stage of primitive society. The vast majority of primitive society belongs to the Paleolithic Age, in which human beings went through the stages of Homo sapiens, Homo erectus, early Homo sapiens and late Homo sapiens, and finally completed the transformation from primitive man to modern man.

There was very little surplus of the product of labor in the Paleolithic primitive communes, so there was no exploitation, no class, and very little exchange, and there was an extreme isolation between the different primitive communes. However, with the change of geography and climate and the need to find new food gathering bases, early humans had to migrate to new areas in branches. According to the known archaeological excavation materials, humans in the homo sapiens stage were mainly active in East and South Africa.

By the time of Homo erectus, the range of human distribution had expanded to a wide area of Eurasia, in addition to south-central Africa. In the stage of Homo sapiens, especially in the late Homo sapiens, the scope of human migration was further expanded, with some of them crossing the land bridge that might exist at that time from the far east of Siberia into the Americas, and partly from Indochina and Indonesia into Oceania. This movement of human beings is very slow, about 3 million years, but it is a loosening of the original isolation.

In the process of moving, human beings brought their primitive production technology and social organization from one place to another, which was the initial beginning of the development of history into world history.

The exact process is still a mystery. The approximate process is as follows: about 80 million years ago, some forest australopithecus were forced to live on the ground due to the survival pressure of climate change and the disappearance of primeval forests, and gradually evolved into primitive humans with erect bodies, liberated upper limbs, and developed brains.

God hit a plane.

Summary. According to archaeological research, the "Lucy" girl from Ethiopia, Africa, and the Australopithecus australopithecus were about 3 million years ago, and both are believed to be the first ancestors of humans. Our ancestors first appeared in Africa, then migrated to other continents and evolved again.

At present, the world's three major human races (black, white, and yellow) all evolved from African australopithecus.

How humans appeared on Earth.

Hello, it is my pleasure to answer for you that human beings, as living beings on Earth, appeared on Earth by the way they evolved by other species. According to archaeological research, the "Lucy" girl from Ethiopia, Africa, and the Australopithecus australopithecus were about 3 million years ago, and both are believed to be the first ancestors of humans. Our ancestors first appeared in Africa, then migrated to other continents and evolved again.

At present, the world's three major human races (black, white, and yellow) all evolved from African australopithecus.

How did Australopithecus appear on Earth.

Australopithecus evolved through living things, and in ancient times, there was only water on the earth, and then there was land, and the creatures in the water gradually came out of the ground, that is, it is very likely that Australopithecus evolved from fish.

And how did the fish come to earth?

Fish are multiplied from single cells to multiple cells, and multiple cells are gradually combined into a living fish.

And how did cells come to Earth?

Is it a microorganism.

Yes, cells are microorganisms, and cells are the result of nature.

Since it was evolved by fish, is there really a mermaid in the world?

There is no evidence to deny whether there are mermaids in the world, and there is no evidence to prove that there are mermaids in the world, but it is undeniable that there are mermaids in the world, it may just be that people have not discovered them, this is just an unsolved mystery of mankind.

It's awesome. Therefore, there are still many unsolved mysteries of human civilization, all of which need to be explored by us.

1. After the formation of the earth in the universe, it was lifeless at first. After a long period of chemical evolution, the organic elements in the atmosphere are synthesized into organic molecules through the action of nature.

2. Organic molecules are further synthesized into biological monomers, and then further polymerized into biopolymers, such as proteins, polysaccharides, nucleic acids, etc.;

3. After the advent of protein, the simplest life was born. This was a major event that happened about 3.6 billion years ago.

The process of producing humans on Earth:

Since Darwin founded the theory of biological evolution, most people believe that human beings are the product of biological evolution, modern humans and modern apes have a common ancestor, theoretically dividing the human origin process into the ancient ape stage Zen burial stage, also man and ape stage, can make tools of the human stage three stages, the third stage includes the ape and Homo sapiens two major periods, and is divided into two stages: early and late, in 1859, the British biologist Darwin published "The Origin of Species", clarifying that biology from low to high, From simple to complex development laws, with the continuous improvement of dating methods, people's understanding of human origin has also deepened, although there are still many problems that remain quietly, but can roughly outline the clues of human origin and development.