Why are Africans so dark

The black color of Africans is the result of evolution through natural selection.

The reason why Africans are dark: Africa is in the equatorial region, most of the time under direct sunlight, ultraviolet rays.

Extremely strong, the human body's ** long-term exposure to ultraviolet rays will be harmed, in order to be able to resist the damage of ultraviolet rays, Africans ** produce melanin.

Hence the black**.

The color mainly depends on the amount of melanin, which is a black or brown particle, which blocks the damage caused by ultraviolet rays in the sunlight to the cells below the human body; When the sun is strong, the amount of melanin in ** will increase.

The reason why Africans are black is because of the amount of melanin. And not that the sun tanned, the ancestors of the Negro lived in places where the weather was hot and the ultraviolet rays were intense. For example, on the equatorial side, people with more melanin can resist ultraviolet radiation, but people with less melanin cannot.

So this kind of people with a lot of melanin slowly multiplied and became blacks. Human beings have a self-protection mechanism, that is, they begin to form melanin in the epidermal cells, which is used to absorb the energy in the sun and protect them from the harm of ultraviolet rays in the sun. The more melanin, the stronger the protective effect on **.

This is also the reason why we spend a lot of time in the sun,** it will turn dark. Under long-term sun exposure, the melanin formation mechanism has been precipitated into the genes of Africans, and large amounts of melanin are produced with or without sun exposure. That's why the ** of Africans will turn black.

The darkness of Africans is mainly caused by high sunlight exposure and genetic factors. Because Africa is in the equatorial region, the sunlight is in a direct state for a long time, and the ultraviolet rays in this case are very strong, and after being directly irradiated on the **, it will lead to melanin pigmentation and darkening**, in addition, with the continuous change of human genes, Africans have gradually formed a black ** race. The darker skin tone of Africans can reduce the damage caused by ultraviolet rays to the inner ulna cells.

Summary. We have the impression that Africans are mostly black, and all of them are called black because they look really dark, except for their teeth.

We have the impression that Africans are mostly black, and all of them are called black because they look really dark, except for their teeth.

The black is genetically determined and inherited. The reason why black people are black is because there is a lot of melanin, and the reason for the high amount of melanin is that the ancestors of the black people are distributed in the tropics, close to the equator, and the weather is hot in some places, and the sun has a large altitude angle, so the ultraviolet level is high.

Summary. Hello <>

The reason why Africans are black is genetically determined, it is genetic, and there are also climatic factors. The reason why black people are black is because there is more melanin, and the reason for their high melanin is that the ancestors of black people are generally distributed in tropical areas, close to the equator, where the weather is hot and the sun altitude angle is large, so the ultraviolet level is high. The ancestors of the Negroes were generally distributed in tropical areas, close to the equator, where the weather was hot and the sun had a large altitude angle, so ultraviolet levels were high.

In the time of the ancestors of black people, because people with more melanin were easy to survive, and people who were whiter could not resist ultraviolet rays in that environment, so they were more likely to die. People who live in the African environment have evolved their skin color to black in order to constantly adapt to the African environment. High melanin content to absorb ultraviolet rays from sunlight and protect internal structures from damage.

Why are Africans so dark

Hello <>

The reason why Africans are black is genetically determined, it is genetic, and there are also climatic factors. The reason why black people are black is because there is more melanin, and the reason for the high amount of melanin is that the ancestors of black people are generally distributed in tropical areas, near the equator, where the weather is hot and the sun has a large altitude angle, so the ultraviolet level is high. The ancestors of the Negroes were generally distributed in tropical areas, close to the equator, where the weather was hot and the sun had a large altitude angle, so ultraviolet levels were high.

In the time of the ancestors of the black people, because people with more melanin were easy to survive, and people who were whiter were less able to resist ultraviolet rays in that environment, so they were more likely to die. People who live in the African environment have evolved their skin color to black in order to constantly adapt to the African environment. High melanin content to absorb ultraviolet rays from sunlight and protect internal structures from damage.

Africans generally refer to the Negro inhabitants of sub-Saharan Africa, whose languages are divided into four languages: the Kor Isan family, the Niger-Gontan Timgo language family, the Bambu Youtu language family, and the Nilo-Sajang Hajohara language family.

The darkness of Africans is mainly caused by sun exposure and genetic factors.

Most of the people living in Africa are black, which is determined by their ethnicity. Black people live in an environment with long sunshine, high temperature and strong ultraviolet rays all year round, and their bodies will secrete a large amount of melanin to make their own ** can better intercept ultraviolet rays and protect their health. Black people also have the characteristics of no sweat hair, high density of sweat glands, and large mouth cracks, all of which serve heat dissipation.

The human race in the world can be divided into three categories according to skin color, they are yellow, black, and white, and most of the people in Africa are black, and this is also the birthplace of black people, so the black skin color of Africans is mainly affected by race. The climate of Africa has the characteristics of strong lines, in order to resist strong sunlight, black people often secrete a large amount of melanin to make ** black or brownish-black, this skin color can effectively intercept ultraviolet rays, thereby protecting their health.

Introduction to Africans.

Africa's deserts account for about one-third of the continent's area, making it the largest continent in terms of desert area. Among them, the Sahara Desert is the largest desert in the world. East Africa is also home to the world's largest rift valley.

Other deserts are mostly found in Southern Africa and East Africa in the Horn of Africa. Within 15 degrees north and south latitudes, there are mostly vast savannahs, and the Congo Basin and the coast of the Gulf of Guinea are tropical rainforests. Two-thirds of Africa's inhabitants are black, the rest are mostly Caucasian, and only a small minority of Madagascar is yellow.

The predominantly inhabitants of Africa are the Negro people, commonly known as the Negroes, but there are also many different types of Negros. The two most common black tribes are the Sultan Negro and the Bantu Negro. The Sudanese Negros are mainly distributed in the area of two rivers and one lake south of the Saharan Sands, namely the Niger-Lake Chad-Middle and Upper Nile, from the Atlantic coast in the west to the west of the Ethiopian plateau.

The Bantu Negro people, on the other hand, are located in a vast area south of the Sudanese Negro people, and are the basic human race of the countries of Equatorial Africa and Southern Africa, and are also the most populous and representative ethnic group in Africa.

The above content refers to Encyclopedia - Africans.

Most of the people living in Africa are black, which is determined by their ethnicity. Black people live in an environment with long sunshine, high temperature and strong ultraviolet rays all year round due to lack of enlightenment, and the body will secrete a large amount of melanin to make their own ** can better intercept ultraviolet rays and protect their health. Black people also have the characteristics of no sweat hair, high density of sweat branch glands, and large mouth clefts, all of which serve heat dissipation.

Why are Africans black.

Africans are black for racial reasons.

The human race in the world can be divided into three categories according to skin color, they are yellow, black, and white, and most of the people in Africa are black, and this is also the birthplace of black people, so we see that the black skin color of Africans is mainly affected by race.

The reason why black people evolved to be black**.

The climate of Africa has the characteristics of long sunshine, high temperature and strong ultraviolet rays, in order to resist strong light, black people often secrete a large amount of melanin in the body to make the volcanic bend ** black or brownish-black, this skin color can effectively intercept ultraviolet rays, thereby protecting their health.

Characteristics of black people.

In addition to the dark complexion, black people also have the characteristics of no hair on the body surface, high density of sweat glands, and large mouth cracks, which are all characteristics that black people have evolved to effectively help the body dissipate heat in order to adapt to the hot tropical environment, and the characteristics of different races are related to their living environment.