Humans originally have body hair to keep warm, so why do they have to shed their hair and put on clothes?
history of human evolution
Biologists have always believed that human beings evolved from ancient apes. The origin of human beings has gone through four links: ape-human, primitive human, Homo sapiens and its contemporary species. Now.
About 50 million years ago, primates evolved rapidly in a radial fashion, and from inferior primates apes, they split into tall primates.
Modern humans are also known as "naked apes" because in ancient times, humans had lush body hair like gorillas.
So what is the reason for the loss of human body hair, leaving only fine hair, fine hair and other hair.
What Causes Humans to Lose Body Hair?
In nature, most mammals are covered with a layer of hair. Even gorillas, which are blood relatives of humans, have dense body hair. However, after a long evolution, humans gradually lost their body hair, revealing their skin. The remaining parts are left with body hair.
What is the function of animal body hair? First, it can help animals store heat, second, it can prevent the skin from being sunburned by the sun, and third, it can prevent some thorns in nature from scratching the skin, and it can also hide in the natural environment.
What made humans lose this layer of maintenance fur and become embarrassed "naked runners"?
Many biologists have speculated that humans tend to shed body hair, and the more critical reason is to better expel heat.
About 6 million years ago, the ancestors of human beings, like the gorillas, lived in today's central African interior, and they wandered and climbed among various flowers and trees to collect fresh fruits and green plants for a living. .
The temperature in this area is relatively high, which makes the animals here encounter the problem of heat rejection. Therefore, different microorganisms have preserved different survival strategies in the whole process of evolution. For example, Leo and Cheetah, they are Will bypass the noon time, hunting in the morning or evening.
Humans immediately pulled out their body hair in order to expel heat better, and at this time, humans were already actively hunting, because humans did not have sharp claws or sharp teeth, so they gradually scientifically researched some initial special tools. And everyone has to run for a long time during the whole process of hunting.
If you bring body hair, it will also cause a certain frictional resistance, so the removal of body hair by humans lays a solid foundation for flying.
After that, the natural environment on the earth has undergone strong changes, becoming more and more cold and dry, and many mountain forests have declined. Therefore, human ancestors gradually rushed from the branches to the grasslands to find food. At this time, a new problem occurred.
In the grasslands, it is not like in the mountains without the protection of the forests, then the human skin will be immediately exposed to the sun, and the hiding function of the hair will have a foothold at this time. Therefore, the dietary structure of human beings and Their living habits have undergone major changes, causing human ancestors to gradually walk upright.
Why do humans wear clothes?
The fact that humans put on clothes is due to the advent of the Great Ice Age in the fourth season. The Great Ice Age caused extremely frozen regions to spread to Africa all over the world, and it became more and more severe. At this time, the flames could no longer help humans resist the severe cold.
Humans strip the animal fur and put it on their body. The original clothes and trousers were not smooth. With the development of the period, people made more and more delicate clothes, and gradually applied animal chemical fibers. , Fiber material, in addition to the cold and warmth, gradually make more comfortable and beautiful clothes.
Summary: In fact, the occurrence of clothes and pants is a major achievement in the history of human evolution, which also means that humans no longer have to adapt to the new environment according to their own evolution, but gradually adapt to the new environment according to the application of special tools.
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