Primary colors are not a fundamental property of light but are related to the color vision system in animals. The human eye normally contains only three types of color photoreceptors (L, M and S) that are associated with specialized cone cells.
No. 15; Updated October 2015. Approximately 120,000 children are adopted each year in the United States. Children with physical, developmental, or emotional handicaps who were once considered difficult to place with a new family are now being adopted (special needs adoptions). Adoption helps many of these children to grow up in permanent families rather than in foster homes or institutions.
Of the estimated 402,378 children in foster care on September 30, 2013: 53 percent had a goal of reunification with parent(s) or principal caretaker(s).  24 percent had a goal of adoption.  7 percent had not yet had a case plan goal established.