What do scientists believe is the determining factor that causes skin color variations in groups of humans around the world?
a.
genetics – two people with the same skin color are more likely to be genetically related, even if they come from different parts of the world
b.
diet
c.
ultraviolet radiation exposure in a society over a long period of time
d.
vitamin deficiencies

I disagree. The answer is C because ultraviolet light can tan you right? Well if it can change your skin color from white to tan it definitely can change the color of your skin to a different color! I hope this helps!!

May consider a group  g=({0,1},+)g=({0,1},+)where  ++  will work as the xor operator like we work in boolean algebra. note here, that ‘00’ and ‘11’ are not the usual 0 and 1 that we work with everyday. the elements are  called  ‘00’ and ‘11’ and  may not mean  zero (nothing) and one (single). ‘00’ is the identity for the given binary operator +, meaning that any element operated with ‘00’ gets us that element itself.  for a set  ss  in  g′g′  having more elements than just  {0,1}{0,1}  the values for  a+b∈sa+b∈s, such that  a∈s,b∈sa∈s,b∈s, have to be first defined, only then can you determine the value of  1+11+1. the answer could possibly have been  22  if oanswer is25,000

Even doh you might not think so , you matter and god has planned a life for you so don’t end your life. p.s. god loves you ❤️