Answer:
Russia has a Presidential Democracy Russia elects a president as head of state and a legislature
Germany has their chief executive that runs the country thats voted by people over the age of 18
so my guess i<em>t's B </em>
Answer: Serotonin is likely in short supply
Explanation: serotonin is a neurotransmitter produced by nerve cells that is involved in depression, appetite, and is crucial in maintaining a sense of well-being, security, etc. It is called the happy chemical because of it involvement in making one happy. An imbalance influences the mood of an individual.