These are called pre exsisting conditions.
This is partially true. There are many contributing reasons but this is one.
Answer:
The two main types of nucleic acids are DNA and RNA. Both DNA and RNA are made from nucleotides, each containing a five-carbon sugar backbone, a phosphate group, and a nitrogen base. DNA provides the code for the cell 's activities, while RNA converts that code into proteins to carry out cellular functions.
Explanation:
Neurologist An M.D. who diagnoses and treats disorders of the nervous system.
and neurosurgeon that General term for someone who studies the nervous system.
ANSWER: neurologist- neurosurgeon.