Question: At the age of 15, Julie gave birth to twin sons. Julie did not finish high school and did not have a job. She was not able to take proper care of the boys, so she decided to give them up for adoption. Their father was convicted of armed robbery and rape. He signed over his custody rights to the state while serving a 30-year prison sentence. The boys end up being adopted by different families. Tom, the brother who lives in a large city, is diagnosed with attention deficit hyperactivity disorder (ADHD). Tests were done and it was discovered that the level of _______ in his blood was twice the levels found in the general population. The doctors are convinced this is the cause of his disorder. Group of answer choices amino acids glucose mercury neurotransmitters. Need Assignment Help?