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.
The actual number of children being raised by gay or lesbian parents is tough to estimate as many LGBTQ people keep their sexual orientation a secret to avoid harassment. But an article by the Child Welfare League of America states the following research, A 1995 National Health and Social Life Survey by E.O. An estimated 65,500 adopted children are living with a lesbian or gay parent. 2  More than 16,000 adopted children are living with lesbian and gay parents in California, the highest number among the states. 3  Gay and lesbian parents are raising four percent of all adopted children in the United States.