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Physiology & Medicine / Why is skin black in sunny countries and white in a cold climate?
« on: 03/10/2010 22:31:32 »
IF YOU ARE IN A SUNNY COUNTRY PEOPLE WEAR WHITE CLOTHING TO REFLECT THE SUN,CARS PAINTED IN DARK COLOURS SOON OXIDISE AND IF YOU PUT YOUR HAND ON THEM YOU BURN.SO HOW DOES BLACK SKIN PROTECT THE BODY WHEN IT GETS HOTTER THAN WHITE.SURELY THE SKIN UNDER THE MELANIN WILL GET HOTTER BUT IF MELANIN BECAME WHITER IN THE SUN WOULD THAT NOT BE A BETTER IDEA .