Before adoption laws there was trouble when people gave their children away, and later wanted them back again. These days, children may be put in foster care for a short time, and after, the child may go back to the parents again. But legal adoption lasts for ever. After legal adoption the adoptive parent(s) have all rights and responsibilities to the child. The biological parents have no legal rights or responsibilities to the child at all. Legal adoptions may only be cancelled if they were not done as the law says.