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.
Too many will be further abused in systems that are supposed to protect them. And instead of being safely reunified with their families â or moved quickly into adoptive homes â many will languish for years in foster homes or institutions. On any given day, there are nearly 428,000 children in foster care in the United States. In 2015, over 670,000 children spent time in U.S. foster care. On average, children remain in state care for nearly two years and six percent of children in foster care have languished there for five or more years.