Is walking upright really an evolution for humans?

Any change in human traits is evolution, but this is only the surface of evolution. Human upright walking is due to environmental selection, which has changed the environment suitable for human survival, and upright walking has also liberated human hands.

Modern biology has basically understood the context of human evolution, and it was not very different from other apes at first, walking on all fours, and the bone structure is very different from that of modern humans. Later, due to changes in the global environment, the distribution of food and other things changed, and the original scale of ape populations could not be found in the jungle, so in the competition for the survival of different populations, some had to come down from the trees to find new habitats.

Ground life is new to humans, unlike the easy observation of natural predators like in trees, ground walking also makes the toes do not need to be very flexible, more importantly, strength, over time the individuals who are not suitable for ground life disappear, and individuals with strong arches, flat feet, and more erect spine are easy to survive, and apes who walk upright appear.

Walking upright affects not only the body shape of human beings, but also affects the way of human reproduction and movement, due to the change of pelvic structure, fertility is more difficult for human beings, so many times fertility needs the same kind of assistance, there are scientists human beings This is one of the reasons for the origin of human sociality; Although standing tall and far-sighted, it is a pity that the skeletal structure of the lower limbs makes the human running speed not as fast as that of animals crawling on all fours, and it is not conducive to life in high places, but several physiological curvatures of the spine can provide better cushioning for human movements. The main thing is that the hands of human beings have been completely liberated, and the structure and strength of human upper limbs have also changed.

Whether it is walking upright or crawling on all fours, it is caused by the traits of the organism, and the change in traits is due to the change in the frequency of the intrinsic genes. Modern biology believes that the evolution of organisms is based on populations, and the genes in the ever-changing gene pool in populations are the raw materials for biological evolution. Walking upright has changed the environment in which humans can live, and humans must continue to explore new habitats, and continuous migration has led to the gradual evolution of human beings into modern humans.

Yes. Because walking upright means a lot to humans, evolving their hands and being able to use tools, walking upright is really an evolution for humans.

By walking upright, humans freed their hands and began to use tools to fight against the threats posed by nature, and through long-term evolution, the human brain evolved more developed, and thus the human population developed rapidly. Walking upright is significant in the history of mankind.

It's evolution, because humans used to walk on all four legs, but in order to adapt to the environment, they became two-legged walking.

The reason why humans walk upright.

<>When did humans start walking upright? Why did humans evolve towards walking upright? As far as this question is concerned, I believe that many people have a lot of questions, because we all know that in our real life, with the development of economy and society, our country's science and technology are also constantly developing and progressing, and it is precisely because of this that our society is showing a thriving appearance.

The changes in our society have also given rise to the discipline of sociology, of course, for the origin of human beings.

And the study of human society, which is very important, because it can be clearly explained to a large extent, to see where our human beings are going, and we can also see the continuous development of our human society, and the development of the original source.

In antiquity.

At that time, our society was not yet formed, but after the opening of the world, the natural world began to develop and change, and all living things in nature were constantly developing and changing. At the beginning of the opening of heaven and earth, there was no human existence in the development and change of our entire natural world, and human beings were constantly formed in the later social changes, so we have a strong interest in the development and change of the entire natural world and the formation of human society. Humans began walking upright about four and a half million years ago, when humans and apes began to draw a clear dividing line.

When man successfully evolves, he becomes a human being, and he begins the life of human society.

Man began to learn to use fire and other tools, which is also the biggest difference between man and ape, and later people had an ideological consciousness and had greater development. One of the important reasons why people have gone from crawling to walking upright is the need for social development, and the needs in the process of our social development are evolutionary and social needs, and they are derived from the development and changes of the century. For people to walk upright, everyone should be very familiar with it, upright walking is more suitable for the development and change of society, only in this way, can promote the process of human society.

Humans were able to walk upright in the early ape-man stage. In this way, you can improve your quality of life and make your activities more free, so this evolution will happen.

It started in ancient times, because it was more convenient for humans to make it, and humans used tools, so there was such an evolution.

4.5 million years ago. Because this way can make people live a better life, better catch some prey, and observe some things conveniently.

According to the law of survival of the fittest, many creatures could not adapt to the changes in the climate and were eliminated by the wanton grinding, and some ancient apes were forced to come down from the trees and go to the flat land in order to survive. Originally, they lived on trees, picking wild fruits to satisfy their hunger, and did not have to worry about food. Nowadays, ready-made food no longer exists, and in order to survive, they must hunt wild beasts in search of new food.

During this process, their limbs and brains begin to develop. The need for hunting and transporting prey allows the limbs to gradually separate their functions. Engels once pointed out that walking upright was a "decisive step" in the process of transformation from ape to man.

The upright walking of Australopithecus led to the division of labor between the front and rear limbs, which were engaged in more and more activities. After a long period of training and evolution, they gradually learned to make and use simple tools, from occasionally discovering and using natural tools, such as hunting with sticks and stones, to using natural tools regularly. In the harsh living environment, they have to fight with wild animals and nature, the division of hands and feet, walking upright makes their horizons gradually broaden, more and more information from nature, the brain capacity increases, and the brain gradually develops.

Engels said: "Labor creates man himself. "In the long process that followed, their bodies and intellect developed greatly, they found more food for their travelers**, and they learned to farm.

It should be about 4.5 million years ago, when humans and apes began to diverge, giving rise to Australopithecus, which then evolved from Australopithecus to Australopithecus 2 million years ago.

before further developing into modern human beings.

The process of human development can generally be divided into four valence bands: (1), the early ape-man valence segment, (2), the late ape-man stage, (3), the early Homo sapiens (ancient) stage, and (4), the late Homo sapiens (new human) stage.

It should start walking upright at the ape-man and ape-man stage. The former is supplemented by upright walking, and the latter is dominated by upright walking.

In the process of evolution from apes to humans, upright burning walking is the first step of evolution, but also the basis of subsequent evolution, through DNA analysis, scholars can roughly judge that human beings began to evolve from 6 million years ago, from the analysis of human skeleton fossils, scholars generally believe that the time of human upright walking is about 300 to 4 million years.

Why do humans choose to stand upright and resist demolition? This question has plagued scholars for many years, because in mammals, almost no species other than humans choose to walk upright, for which scholars have put forward numerous hypotheses.

Among them, the determinism of natural phenological conditions is the most popular. n 10,000 years ago, the earth's crustal movement created the Great Rift Valley of East Africa, West Africa has a humid climate and is still densely forested, while East Africa is dry and rainless, and the forest is degraded, forming a savannah, apes lose their living environment and are forced to get off the trees, live in the grassland, in order to broaden their horizons to find food and find danger, apes have to stand up, and over time, apes' phalanges, pelvis and other bones continue to evolve, and eventually evolve into upright walking.

Pros: After humans begin to walk upright, it helps to increase the brain volume of the brain, and it is also conducive to the use of tools, which is the most essential difference between humans and animals.

Disadvantages: Increased burden on the heart when walking upright, easy constipation, hemorrhoids, bone damage.

The brain of Homo erectus has enlarged significantly, and the brain volume of early members has reached about 800 ml, and the brain volume of late members has risen to about 1200 ml, with an average of about 1000 ml. And not only has the brain increased in size, but its structure has also become more complex and reorganized, showing that Homo erectus has developed quite complex cultural behaviors.