Depends on the type of soil, environmental conditions, and additives.
It's the amount of melanin in their skin; some have more than others, thus they are darker than others.
What Characters That Are Somewhat Thicker And Darker Than Others Are Called
because it depends if you have allot of dirt in your ear or if your ear is dirty
Some people have naturally darker skin than others. It all depends on what genes you end up with. Some white people have naturally darker skin, and some black people have naturally lighter skin.
Some peoples skin are darker due to the production of melanin which is made by melanocytes. When a person is in direct contact with the sun it triggers the production of melanin to be made.
The nucleus
because its darker than others
There is only a genetic colour difference. Some are lighter or darker than others.
yellowish orange. some are darker than others though.
Darker colors like black, will absorb more heat than lighter colors, such as white.
Because they are differrent species of ants. There are millions of different types. Or, if they are in the same nest it is because that the darker are the female, while the brighter are the male.
Because the lighter the pigment in your skin the less protected you are