Where on Earth did humans first appear?

On the East African continent, archaeologists have found fossils of ancient humans from about 2.6 million years ago, the earliest to date.

Africa. It appeared more than 3 million years ago.

It was reported that it should be Africa.

The earliest human footprints appear on the fossils, which are 100000 years old, and the origin of human beings is mysterious.

At present, the academic community generally believes that the time of the first human ancestor is 7 million years ago, and there is no specific time and argument, and it is based on the transformation and reasoning of apes.

More than 2 billion years ago, single-celled algae organisms.

The first humans on earth lived in what is now Africa.

There have long been different opinions in the academic community about the origin of human beings and modern humans.

In the 67th decade of the 20th century, the academic community finally reached a basic consensus: the earliest human beings originated in Africa 67 million years ago;

About 2 million years ago, some of them left Africa and migrated to Eurasia and other places, becoming the common ancestors of the ancient humans found outside of Africa today.

The history of human civilization began with the invention of writing, and the earliest time was only seven or eight thousand years.

The main manifestations of the emergence of early human civilization are: (1) the Nile River valley in Africa, which established the early slave state of Egypt; the two river basins of Western Asia, where the ancient kingdom of Babylon was established; The Yellow River and Yangtze River basins in East Asia established the first Song Yin Dynasty and the Indus Valley in South Asia, forming ancient India. (2) Ancient Egypt had the Jinyu Pagoda of world civilization, and Cuba Bizhen formulated the world's first relatively complete written code - the Code of Hammurabi; Buddhism was born in India, and the Great Wall of China and the Four Great Inventions are famous all over the world.

3) The great river basin gave birth to human civilization because of its superior natural conditions such as water source and soil, but the struggle of human beings to maintain survival and development has made history.

50's 1

Dinosaurs appeared 245 million years ago!

Dinosaurs ruled three geological epochs for a total of 165 million years.

However, during the Triassic and early Jurassic periods, dinosaurs still did not become a very powerful species, almost completely dominating the entire evolutionary process of animals.

By the end of the Jurassic period, very large sauropods had become the largest creatures ever on Earth.

The end of the Jurassic period was the peak of their domination of the earth, and they far surpassed other creatures of the same period in terms of diversity, intelligence, and size.

The earliest life forms on Earth were probably 100 million years ago, that is, 16 million years earlier than the age now accepted by the scientific community. A professional survey was published in the latest issue of the journal Nature on Thursday. The report concluded that the first life on Earth appeared hundreds of millions of years ago.

Two U.S. scientists who published the report noted that after careful analysis of a coral, they found that it formed 100 million years ago. This suggests that simple life forms at the microbial level had emerged on Earth at that time.

Mike Theis and Donner Rove, professors at Stanford University in the United States, who worked on the study, said the latest findings could potentially end the current debate over when life was formed.

Experts from Nature magazine point out that the work of Mike Theis and Donner Rove is very probatory, and the analysis in their article strongly argues that what they found is indeed the remnants of biological activity, and not the result of hot spring activity.

This first year of history has been talked about, primitive people.

The origin of human beings has been full of controversy in academic circles.

One of the more popular beliefs is that the ancestors of all modern humans came from East Africa, leaving their homeland about 100,000 years ago and rushing out of Africa and into the world.

From then on, they began to replace the local Ransom Founders and take over the world.

The strongest evidence for this theory is that Africans are genetically diverse compared to humans on other continents, which means that they have a much older history.

Another relatively unpopular theory is that modern humans developed on each continent and that they all contributed to the human gene pool.

According to an article published in the January 12, 2001 issue of the journal Science, Homo sapiens has the characteristics of both ancient and modern humans.

The biggest basis for this theory is the differences in physical characteristics of human beings around the world, such as skin color, hair color, body and skull shape.

Barox's new discovery provides new and strong support for the "African origin theory".

The scientist found that Ethiopia's geographical proximity to 51 places around the world is related to the genetic diversity of humans in the region, and the farther away from Ethiopia, the less genetic diversity there is.

He deduced that after humans left Ethiopia, some genes were gradually lost along the way.

"The inspiration for this research came from our research on the genetic diversity of human immunity, and we wanted to know if people in areas with more diseases had more genetic diversity in those immune genes," Barrox said.

Barrox further found that as the distance from Africa grew, the decline in genetic diversity increased along the route of early human migration, and that such a strict pattern would not have been possible if humans had originated in different regions.

It is surprising that the human form has changed so much in such a short period of time, but most biologists accept it.

Barrox said.

Our ancestors, after arriving all over the world, began to scatter among the local hominids and gradually replaced their dominant position, eventually forcing them to withdraw from the stage of history.

And the biggest ** of our ancestors is their tool-making technology.

After the modern people arrived in Europe, they had direct contact and competition with the local ancient humans, and with more advanced tool-making technology, they defeated the Neanderthals and became the masters of Europe.

Interestingly, Neanderthals also learned a lot about tool-making from modern humans before they became extinct.

Barrox said.

It is not the earliest primitive creature, and human beings have only appeared in the last tens of thousands of years.

No. The first to were bacteria and some single-celled organisms!

No, dinosaurs were the first creatures on Earth.

In the 9th century, Darwin believed that humans might have originated in Africa. In the 20s of the 20th century, Australopithecus fossils were discovered in Africa, and many people believe that humans are the real place of human origin. Moreover, Africa is an ideal region for human origin, with vast territory and complex terrain, including tropical jungles and grasslands, deserts and mountain valleys.

In addition, many important hominoid fossils of the Middle Pleistocene have been found in Africa in the past few decades.

In 1857, the American paleontologist Wrighty believed that humans first appeared in Asia. Fossils of Australopithecus rama excavated from Mount Siwarak in Pakistan and northern India. In 1957 and 1958, in Xiaolongtan, Kaiyuan, Yunnan, China, fossils of Australopithecus forestarism and Australopithecus rama were also discovered.

Later, six fossils such as the skulls of Australopithecus Rama and two skulls of Australopithecus were found in Lufeng, Yunnan. Ramaucus is considered to be the direct ape-like ancestor of humans, and belongs to the family Homo in the division of the stool family.

Some people have linked the fossils of Australopithecus and Rama Australopithecus in Kaiyuan in Yunnan Province with the fossils of Yuanmou Ape Man, the fossils of Tongzi Ape Man in Guizhou, and the fossils of Ziyang Man in Sichuan Province for research and investigation, and some people have put forward the "Asian Plateau Theory" and advocated that the Central Asian Plateau is the cradle of mankind.