Exposure to ultraviolet (UV) light causes the skin to darken by stimulating the production of:

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    carotene.
    keratin.
    haemocyanin.
    melanin.
    sebum.
asked May 27, 2013 in Anatomy & Physiology by anonymous
    

1 Answer

0 votes
melanin.
answered May 28, 2013 by NewSky ~Expert~ (2,450 points)



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