to cause to hold or exhibit a particular bias; to influence, especially unfairly: a tearful plea designed to bias the jury; a survey biased toward highly educated people. 11.
Moles are caused when cells in the skin, called melanocytes, grow in clusters or clumps. Melanocytes are distributed throughout your skin and produce melanin, the natural pigment that gives your skin its color.
Some moles fade away or fall off over time, often without you realising. It is the normal process of defense triggered by your body and this is triggered when a cut or puncture in the skin or skin comes in contact with a minute droplet of some chemical which is corrosive in nature.