Skin color is not only determined by whether you are in the sun or not. There are many environmental factors that help determine the color of your skin. Some of these factors include, ashtma, aging, sun, how much oxygen is in an area, and the nearness of a location to the equator. For example, nearness to the equator means that the area usually has high temperatures which would cause them to have darker skin color.
Malignant Melanoma is a neoplasm of melanocytes. A long time ago melanoma was not a common disease but over time the disease has become more common as well as the number of deaths caused by this disease. Malignant Melanoma is caused by sun exposure and artificial UV sources such as tanning booths. People of higher economic status tend to be more at risk of getting melanoma because they can afford vacations in places with higher UV intensity.
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