An outbreak of a disease that spreads through a community of people (Ex. Europe, Johannesburg, Missouri), some examples would be The Black plague, Ebola, or The common cold/the flu
And I think you meant EPIDEMIC
Leaches were placed on top of the victim to remove "bad blood" what people did not know back then was that leaches remove 'good' and 'bad' blood alike.
Urban areas have more population True
Relationships in nature are described by their interactions with other living things.
