First-degree murder charges have been leveled against teen parents who allowed their infant to suffocate while they were reportedly high on drugs.The parents, Austin Adams, 19, and Savanah Adams, 19, are both charged with first-degree murder and aggravated child neglect. They could face life in prison if they are convicted.The parents were named in sealed indictments returned by the grand jury in the death of their 1-month-old daughter, Anessa Adams. The child was found not breathing at their apartment last month on May 10.It was learned the baby had slipped between cushions of a section sofa on which the two were sleeping.