Give examples of how human hair and nose relate to geography

For example, the hooked nose of Europeans and Americans is related to the high latitude and colder climate environment, and the white people have a high nose bridge, the nose is mostly hooked, and the nasal orifice is long, which is conducive to heat preservation and preheating of the air, reducing heat dissipation. Reduce direct inhalation of cold air.

Black people are mainly distributed in the tropics, the climate is hot, and the nose is broad, which is conducive to dissipating heat from the body, such as the curly hair of black Africans, which is related to their tropical location. Almost all black Africans have curly hair, with gaps between them, and when the blazing sun hits the top of their heads, the curls are a natural cool hat.

The main colors of Caucasian hair are yellow, golden, red and brown, which is due to the fact that Caucasian people were born in Europe, where the climate is foggy and cold, and the sun's ultraviolet rays cannot shine down. Because Europeans live in such an environment for a long time and are less exposed to ultraviolet rays, there is less melanin in the body, so that the hair lacks melanin, and the hair becomes the original color.

There is also the black color of peoples such as Arabs and Central Asia. The Caucasians living in the Middle East and Central Asia were the early Caucasians, and after immigrating to these places for a long time in the sun, the melanin in the body accumulated, and over time, the ** and hair became black. We yellow and black people are also formed due to the difference in the environment in which we live.

Asian Guy Hairy Black! Flat nose! Facial features plane.

Europeans have red, yellow, and white hair, and a tall nose! The facial features are profound.

For example, the curly hair of black Africans forms an insulating layer on the head of the mold, which can effectively protect the head in the blazing sun; The Nordic nose is high and narrow, with long nostril passages, which is good for keeping out the cold

So the answer is:

In ancient times, human beings did not cover their bodies, and their appearance and bodies would change with the climate.

The three major races that have been formed now actually represent the three major climates.

Black people are the indigenous inhabitants of the tropics near the equator, and the tropics promote the secretion of bodily fluids, and body hair is scarce and dark.

Caucasians are the Arctic Circle.

The cold zone will promote an increase in hair and body hair, **whitening.

The yellow race is 30° north latitude

The aborigines of the temperate zone, the temperate zone is the middle of the two, **yellowish, more body hair than blacks than whites, less body fluid secretion, and not much body hair, so there is no body odor.

The Arabs who now live at 30° north latitude are actually Caucasian people who moved south more than 4,000 years ago, not the original temperate natives.

Take a closer look at the ancient civilization at 30° north latitude, Ancient Egypt.

Man, ancient Babylon.

People, ancient Indians, and Chinese are all biased towards the appearance of yellow people.

For example, the ancient Egyptians in the ancient Egyptian portraits have a yellow complexion and black hair, without any Caucasian features, while the ancient Egyptians have straight hair and are not as crooked as blacks and have no black features, and the outline of their facial features is obviously yellow.

4,000 years ago, the white people went south to occupy the temperate zone of what is now Asia, Europe and Africa, replacing the original yellow race, and at the same time, they are also yellow, and the Arab gene has almost nothing to do with the Chinese, but you will find that the mixed blood of the Chinese and the Arabs will almost invariably favor the appearance of the Chinese.

For example, black African hair curls and forms an insulating layer on the head, which can effectively protect the head in the blazing sun; The Norse people have a high and narrow nose and a long nostril passage, which is conducive to keeping out the cold

So the answer is: