Ancestors, the sun, genes and/or melanin that is in our skin.
Skin color is determined by phenotype. Phenotypes are like genetics (inherited by the parents) but can change during a person's life, and some times, but very uncommon, a baby is born with a different phenotype then either parent. Melanin is the pigment that causes differing skin colors. Differing amounts cause the range in colors from white (with little melanin or most of the melanin concentrated into moles and freckles) to black with high levels of melanin spread through the skin. There are other factors, but scientists seem to disagree on what all affects skin color.
Everybody has different pigments, which gives us our skin, hair and eye colors.
they are skin but different colors diabetes
Using three different varieties of potatoes and of differing colors. For instance purple, a red and a gold. Leave the skin on, it's more nutritious and adds color to the finished product.
There can b many different types of skin colors! havent you seen people all around you, some with dark skin becouase of tans or just because of their gentics. there can be brown "black", white, olive theres heaps more if you google it
As long as one of the colors isn't green you are alright. If circumcised, the skin will be a different shade at the cut line. Skin tone can just vary for no reason.
Different skin colors.
There are virtually an infinite amount of different skin colours that exist since the possibilities of shades are infinite.
YES! it depends on your skin tone! :P
Yes. Some alien races have different skin colors (i.e. red, orange, yellow, green, blue, purple, pink, brown, black, white, etc.).
Nobody really knows because there are no fossils with skin that has colors on them.
yes skin color is an adaptation