There were more but they weren't discovered as they were not viral and treatment was unknown and research were not done.
we need a better understanding of this question
Answer:
If Susan will visit a professional doctor or qualified doctor she will be diagnosed with ADHD (Attention Deficit Hyperactivity Disorder)
Explanation:
The mentioned symptoms clearly describe she is suffering from ADHD. She has dificulties with her homework and constant interrupts the classes, but she is focusing on the engineering contests and creating interesting objects.
Your answer is the nuclear envelope, The nuclear envelope is a double membrane of the nucleus that encloses the genetic material. It separates the contents of the nucleus from the cytoplasm.
