Human skin color is determined by the interaction of melanin, carotene and hemoglobin. Storage of water, fat, glucose and vitamin D is also a function of the integumentary system, according to the AAD.
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Asker's rating. Report Abuse. USPS states that it will take from 3-5 working days. Remember, there is no mail delivery on Sunday-so this may add a day, but only if this is the day they are going to be delivered. Since Penn and SC are in close proximity, I would say that it would be closer to the three day timeframe.Maverick Â· 2 years ago.y grandma is sending me shoes down from Uniontown, Pennslyvania and I live in Gaston, South Carolina How long will it take to arrive she it out yesterday sept 11 and its regular mail. Follow.