This is not supposed to be a polarizinskin analyzer softwareg ?

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question, but if Africans have a natural protection against heat (science actually discovered that people in hotter climates usually develop greater amounts of melanin and coarse hair [which negates some heat] in order to cope with natural and prolonged threats, does that mean that Caucasians have askin analyzer magnifier machine amway natural…
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question, but if Africans have a natural protection against heat (science actually discovered that people in hotter climates usually develop greater amounts of melanin and coarse hair [which negates some heat] in order to cope with natural and prolonged threats, does that mean that Caucasians have a natural protection against cold? By extension , does this apply to any other group other than these two?

Answer:
Maikang The example of neandertals as Caucasians actually doesn’t make much sense, as ‘Caucasian’ is a category of anatomically modern humans, and neandertals were actually a different species.

Your question doesn’t have it quite right, but you are going in the right direction. Dark skin is an adaptation to sun light, while light skin is an adaptation to reduced sunlight, as we use our skin to produce vitamin D through a process which employs sunlight, so where there is less direct sunlight, dark skinned individuals would be more likely to suffer from a vitamin D deficiency, thus light-skinned individuals survived better and produced offspring more fit to their environment.

An interesting adaptation to hot/cold climates in humans is vasoconstriction/dilation, which is how well the capillaries in your skin dilate or constrict in response to the temperature. In colder climates, good vasoconstriction is favored, as it keeps the blood warm, while the opposite is true in warm climates, where overheating would be a concern, and exposing blood to the surface of the skin helps cool the body. Peoples of any race who have evolved up high in mountains where it is cold will be better at vasoconstriction, on average, than neighbors in warmer climates.

A person of mixed heritage may inherit one trait or the other, or, in the case of traits determined by multiple genes (think hair colour or height) might end up somewhere in the middle.skin analyzer

Maikang Melanin helps against UV light. The body design and the fact that most Negroes have less body fat is why some of them might have better resistance to heat. Some whites do have more circulation in the hands which makes them able to go longer in the cold and less likely to get frost bite. I used to go ice fishing when it was colder than 30 below so I am quite sure I am one of those cold adapted types. The white skin or transparent skin in my case lets us make vitamin D better in the high latitudes. That is probably why we developed white skin.skin analyzer

Maikang you want o see a caucasian example of being built for cold? look at the Neanderthal, perfect example, some of which us europeans came to look like ourselves.

for instance, short bodies andlegss,barrell chests and bigger lungs, white skin, more hair that is fine and long especially on our arms legs chests and such, awiderr nasal passage and nose to heat more air,skin analyzer

Maikang Yes, the crotches of redhaired people do not easily start on fire.skin analyzer

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