How human ancestors were formed, and how human ancestors evolved into humans

To put it simply, our ancestors were single-celled animals in the ocean, and apes were also single-celled animals at the beginning, and with the evolution of time, they also evolved, and then some apes continued to stay in the trees and became the monkeys they are now, and the other apes learned to walk and work on land, and became what we are now. Well, it seems to be very superficial.

The Origin of Life At the beginning of the formation of the earth, due to various physical and chemical reactions, the earth was in an extremely hot state, and there could be no life there. Later, as the Earth slowly cooled and its unique astronomical location and structure, life quietly evolved. Since ancient times, people have been concerned about the origin of life, and various hypotheses have emerged.

Today, except for the unresolved problem of the hereditary, the general outline of the process has gradually become clear. Creationism holds that life was created by a supermaterial God, or a transcendental transcendental determinism. It is a primitive idea that arose from the low level of human understanding of nature, and was later exploited by socialized ideologies, either consciously or unconsciously, to lead those who believe in the absolute supremacy of the spirit to believe in creationism.

In ancient times, people had a low ability to understand nature, but they were able to carry out abstract thinking activities, and made a conclusion that life occurs naturally according to phenomena, and its representative ideas are ancient China"The flesh is saprophyte maggots, and the fish is withered"and Aristotle's"Some fish develop from silt and gravel"Wait. With the deepening of understanding, people knew that maggots came from flies, and after Pasteur, people believed that life was produced by parents and spores, that is, life could not arise naturally. But the theory of origin does not have how the first life was formed.

With the great development of astronomy, people have proposed that life on earth is superior to that of other planets or universes"Embryos"This understanding was popular in the 19th century, and there are still very few people who adhere to this view, based on the fact that all organisms on the earth have a unified genetic code and that the rare element molybdenum has a special important role in the enzyme system. The theory of chemical evolution advocates the study of the origin of life from the law of motion and change of matter. It is believed that under the conditions of the primitive earth, inorganic matter can be transformed into organic matter, and organic matter can develop into biological macromolecules and multimolecular systems until the emergence of primitive life forms at the end.

This view was first put forward by the Soviet scholar Oparin in 1924; Five years later, the British scholar Haldane made a similar view. They all believe that life on Earth has evolved over a long period of time from non-living matter; This process is called chemical evolution, as distinct from biological evolution after the emergence of living organisms. Oparin's book The Origin of Life on Earth, published in 1936, was the world's first monograph to comprehensively address the question of the origin of life.

He believes that the reducing atmosphere without free oxygen on the primitive earth can generate simple organic matter (biological small molecules) under the action of energy sources such as short-wave ultraviolet rays, and simple organic matter can generate complex organic matter (biological macromolecules) and form aggregates of multimolecular systems in the primitive ocean, the latter after a long period of evolution and"Natural selection", and finally the primordial life, the protosome, appeared. Experimental evidence for chemical evolution is growing and is accepted by the vast majority of scientists.

Direct evidence for the study of human origins comes from fossils. Judging from the human fossils that have been discovered, the evolution of human beings can be roughly divided into the following four stages:

1. Australopithecus stage: 4.4 million years ago to 1 million years ago.

2. Capable man stage: 2 million BC to 1.75 million BC.

3. Homo erectus stage: 1.7 million years ago to about 200,000 years ago.

4. Homo sapiens stage: 200,000 years ago to 100,000 years ago.

Human evolution originated from forest apes, and developed step by step from primates through a long evolutionary process. It has gone through four stages: ape man, primitive man, Homo sapiens, and modern human. - Common sense and nature.

Humans were created and transformed by gods (super-intelligent life forms).

Who were the ancestors of humans and how did ape-man evolve to modern man?

About 12 million years ago, due to the gradual transition of the climate to cold and dry, Australopithecus began to move to the edge of the forest

Live, some forest apes continued to live an arboreal life, while others were forced to change from arboreal life to terrestrial life, gradually evolving into Australopithecus Homo homo erectus Homo sapiens Homo sapiens Homo sapiens Homo sapiens Homo

There can be two answers to this question, one is the process and the other is the cause.

As far as the process is concerned, the African origin theory is now generally accepted, but the African origin theory is so flawed that there are no believers over the age of three. There are too few fossils, the system is poor, and there is basically no solution.

Reason, according to Darwin's theory of evolution, is a way for animals to adapt to changes in their environment. But this idea is too unreasonable, for example: gorillas and humans have the same origin, they have not evolved intelligence, but they have not been extinct by environmental changes, so the generation of wisdom is by no means caused by environmental changes, nor is it inevitable for biological evolution.

Above, your question is not answered yet.

Ape. Scientists have discovered the earliest ancestors of mankind.

A French team found fossilized bones and teeth of ancient humans in Kenya last year, and after research, scientists found that these may be the earliest ancestral remains ever discovered.

Researchers have shown the fossils to the world, pointing out that they are older than Lucy, an ancient human fossil found earlier, and that they may be more than twice as old as Lucy. This discovery will add more topics to the already fierce debate over the origins of mankind.

The fossils, which include 12 bones and teeth, were discovered last year in central Kenya and prove that Lucy did not have the true ancestor of humans. The latest discovery was announced at a press conference in Paris, and a week later scientists will name the fossil and officially announce the finding.

The oldest human fossils previously discovered were found in Ethiopia, 4.5 million years old, and the 3.2 million-year-old Lucy fossil was found in Ethiopia in 1974 and belongs to another branch of the human ancestral map, but some scientists disagree. Now, these newly discovered fossils prove that the apes were just able to stand up and walk, and that it is likely that Lucy was just a strange-looking ape.

Most of the animals on land today come from water to land. In the history of the Earth's evolution, the Earth was once a water ball, and the earliest life forms on Earth were born from water. Humans share many similarities with other aquatic mammals.

Some scientists believe that early humans lived in water. According to the Gondwana continental theory, about 8 million years ago, there was an ape-like arboreal animal known as the closest common ancestor of modern humans and apes, and they lived in the dense forests of Africa. Later, the offspring of this animal split into two branches and went their separate ways, one evolved into a human primate, while the other remained in the forest to become a modern ape.

However, a new scientific discovery has made this theory difficult to justify: the African savannah appeared after humans learned to walk on two feet. What theories could explain the parting of the ways between man and ape?

Some scientists believe that the tree apes came down from the trees and came to a flat habitat, not flat land covered with soil and grass, but in water. Early humans lived for nearly a few million years, and before they came to land, they lost their hair and evolved their own unique characteristics, a view called the "Ahuizotl theory". It was proposed by Elena Morgan, a female scholar who won an award for her book "The Ahuizotl Hypothesis".

Morgan points out that most early human fossils were found in water-covered areas or at the water's edge in prehistoric times, with many fossils of crocodile eggs and crab shellfish also found near the site of the most famous human fossil, Lucy, known as Eve. Morgan also pointed out that there are many biological similarities between humans and aquatic mammals such as dolphins, hippos, and walruses, one of which is subcutaneous fat, which acts like a thermal blanket to prevent body heat from being lost quickly underwater, because water absorbs heat faster than air. Most terrestrial mammals, including our closest relative, apes, do not have this layer of subcutaneous fat, instead they have a thick layer of hair.

Humans and aquatic mammals have little or no hair. Morgan argues that there are many characteristics of human life in the water: 1

The nostrils are facing down rather than upwards so that water does not enter the nasal passages while diving. 2.The human body needs iodine and 2 3 fatty acids, which are important nutrients for brain development, which are very rare in food on land, but have a lot in fish and shellfish.

3.Humans are covered by many sebaceous glands, which secrete an oily fluid called sebum to make the hair and sebum smooth, while apes have almost no such sebaceous glands. There is also some corroboration to the theory that humans originated from Ahuizotl.

Scientists once found a well-preserved dried mermaid corpse in an indigenous tribe, which, according to locals, was a "sea witch" caught by their ancestors while fishing at sea. Many people also believe that mermaids are not just a beautiful legend, but a branch of the ancient apes that evolved in the water and eventually became extinct due to environmental changes.