8 to 10 years-Should not be left alone for more than 1Â½ hours and only during daylight and early evening hours. 11 to 12 years-May be left alone for up to 3 hours but not late at night or in circumstances requiring inappropriate responsibility.13 to 15 years-May be left unsupervised, but not overnight.16 to 17 years-May be left unsupervised (in some cases, for up to two consecutive overnight periods). to 10 years-Should not be left alone for more than 1Â½ hours and only during daylight and early evening hours. 11 to 12 years-May be left alone for up to 3 hours but not late at night or in circumstances requiring inappropriate responsibility.
spina bifida spina bifÂ·iÂ·da (bÄ­f'Ä­-dÉ) n. A congenital defect in which the spinal column is imperfectly closed so that part of the meninges or spinal cord may protrude, often resulting in neurological disorders.
The birth defect spina bifida (SPY-na BIFF-uh-duh) is a type of neural tube defect. A neural tube defect is a problem with the spinal cord, brain and/or their protective coverings caused by the fetus spine failing to close completely during the first month of pregnancy.