Answer:
C) Shared rules of conduct that tell people how to act in specific situations
Answer:
Neurons are brain cells, numbering in the billions, which are capable of instant communication with each other through chemical messengers called neurotransmitters. ... The brain then attempts to make an internal representation of our external world through complex chemical changes.
Explanation:
1. Hospital
2. U.S army radiology specialist
3. CDC
Hopefully one of those helps