Answer:Several bacteria can cause an upper respiratory tract infection before traveling to the brain through the circulation. When certain bacteria directly infect the meninges, the illness might emerge.
Explanation: and its called Bacterial meningitis
Answer:
social psychology
Explanation:
they are dealing with social issues
Answer:
I would say Option B
Explanation:
A controlled experiment is where you have two or more independent variables, that way you have an experiment to compare results with.