https://padlet.com/janeshawilliams244/hkeg2j15yaxn where did variations in human color come from? en-us 2017-02-02 15:28:42 UTC 2026-01-24 23:30:59 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Balance.png janeshawilliams244 https://padlet.com/janeshawilliams244/hkeg2j15yaxn/wish/151176865 The role of ultraviolet light 
   ultraviolet light  is necessary ,for health growth and development 
  UV light is needed for vitamin D 
  Vitamin D is a necessary nutrient for healthy bone growth, you can get diseases if you don't get enough sun
  Too much UV light can cause negative consequences to the human body 
  too much light can lead to increased risk of skin cancer birth defects or even fatal birth defects or even fatal birth defects 
  you have to receive a balanced amount of UV lights ]]> 2017-02-02 15:37:11 UTC https://padlet.com/janeshawilliams244/hkeg2j15yaxn/wish/151176865 janeshawilliams244 https://padlet.com/janeshawilliams244/hkeg2j15yaxn/wish/151468327 melanin gives us our skin color 
melanin can be controlled by one's genetic inheritance
if your ancestors are from sunny places you will have darker skin



]]> 2017-02-03 15:34:43 UTC https://padlet.com/janeshawilliams244/hkeg2j15yaxn/wish/151468327 janeshawilliams244 https://padlet.com/janeshawilliams244/hkeg2j15yaxn/wish/151469671 we produce more melanin to adapt to UV light 
  we have culturally adapted to UV light 
  many African Americans moved north to find jobs and in the north the U.S fortified milk and backed a plan to fortify milk with vitamin D.]]> 2017-02-03 15:38:05 UTC https://padlet.com/janeshawilliams244/hkeg2j15yaxn/wish/151469671