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.
While most children in foster care live in family settings, a substantial minority â 14 percent â live in institutions or group homes. In 2015, more than 62,000 children â whose mothersâ and fathersâ parental rights had been legally terminated â were waiting to be adopted.