Because of interaical relationships.
people with light skin have less melancholia or melanin or melatonin
Melanin is the pigment which helps our skin to be defensive against over exposure. Normally when you are exposed to sun light the skin will produce melanin automatically. But people from cold climates won't need melanin as the sun light is not strong over there. So people from colder area tend to be white. But people from hotter climates need melanin to prevent sun burn so their body is programmed to do so. More melanin means the darker the skin. The reason why melanin turns our skin to black is, black color can absorb the light, but white will reflect the light. If the light is being reflected only the skin will be exposed to heat and that will damage the skin which is sunburn. But dark skin will absorb the heat and transfer the heat to the inner body parts under the skin and thus by having less damage on the skin.
They like dark skin women because it's something so different from what they have and dark skin women are so beautiful! People love the opposite of what they have a lot of times!
U can find dark skin people in south .light and white skin in north
yes some light rays do reflect from human skin but they are so less that they are almost ignorable. human skin's got pores and so majority of the light rays enter through them. hence human skin does not reflect back light as shiny sufaces like mirror etc. do (That is the reason why other people are almost invisible to you.)
Because light skin just reflexs the light and the dark skin due to its colour absorbs the heat and don`t burn the skin.
Melanin recessive are those with light skin, light eyes, and light hair.
Well, usually there skin is light brown from my view.
the color of our skin is brighter, and it attracts insect because they like brightness. like a bug light.
Skin that is not exposed to air/light frequently. So possibly the skin on your back, or the top of your feet...
They were originaly light skined people but turned dark skined because me the sun
Most Europeans are light skinned