They're a few ways someone could receive color blindness for one color blindness could be inherited from your parents, and two could also be caused by "abnormal photopigments" which is down in the cells/genes and if deflects will most likely cause color blindness.
Hope this helps.
In the 1900s most immigrants came from western europe
The inorganic portion of bone tissue is made up of hydroxyapatite, a complex mineral salt.
Klinefelter syndrome is when there are 2 or more X chromosomes.
