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Anonymous users2024-02-11Because of the convenience, most of the apes lived in trees, and the apes walked upright because of the needs of life after living on the ground.
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Anonymous users2024-02-10Because walking bent over is painful.
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Anonymous users2024-02-09Natural evolution. Natural selection, survival of the fittest.
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Anonymous users2024-02-08Crawling and walking, you can't catch up with the girl. Walking sideways, being beaten by others.
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Anonymous users2024-02-07If you want to crawl and walk, no one will object.
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Anonymous users2024-02-06Introduction: From the point of view of labor, erection is due to the fact that the upper limbs are more engaged in operant activities, and the person is upright due to the division of labor between the upper and lower limbs. But it is now known that the time when human ancestors were erect preceded the appearance of tools and **.
The earliest evidence that humans have been found to be erect is in the Letoli region of Tanzania, dating back 3.7 million years.
From the point of view of vigilance, some experts believe that when human ancestors first came down from the forest to the open grassland, in order to guard against the attack of fierce beasts, they had to stand up in the high grass, so as to detect the fierce beasts in time and dodge, and over time, people stood upright.
From the viewpoint of the theory of water knowledge and longevity, it is believed that human ancestors once lived in water, which created a series of special forms and functions of the human body, including the upright posture.
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Anonymous users2024-02-05More than 12 million years ago, forest apes were widely distributed in Africa, Asia and Europe, especially in the tropical jungles of Africa, and later due to environmental changes, forest apes evolved in two aspects, some forest apes still lived mainly in arboreal life, and slowly evolved into modern apes, such as chimpanzees, orangutans, gorillas, gibbons, etc. Walking upright is the basis for human beings to get rid of the shackles in the forest, and it is the basis for using tools to make tools Engels once pointed out that walking upright is a "decisive step" in the process of transformation from apes to humans The upright walking of ancient apes caused the division of labor of the front and rear limbs, and upright walking enabled ancient humans to liberate their forelimbs, and the use of tools The forelimbs engaged in more and more activities, the upper limbs became more dexterous, and the ancient apes slowly evolved into humans
Therefore, the answer is: upright walking is the basis of evolutionary development, upright walking is the basis for human beings to get rid of the shackles of the forest, and it is the basis for using tools to make tools Upright walking is a "decisive step" in the process of transformation from apes to humans The upright walking of ancient apes caused the division of labor of the front and rear limbs, and upright walking enabled ancient humans to liberate their forelimbs and use tools The forelimbs engaged in more and more activities, and the upper limbs became more dexterous, and the ancient apes slowly evolved into humans
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