NEED NOWW City A has very little variation in te winters and warm summers Why is the the year. Cily I has cold O A City Als on the east coast of a donane while alty Bis on the west coast O B. City Ais on a coastwhile heddle of a continent, O . c. City Ais in the middle writy is on a coast D. City Ais on the went to a while city Bis on the​

The constant presence of diseases or infectious agents within a given geographic area or population group. it may also refer to the usual prevalence of a given disease with such area or group. it includes holoendemic and hyperendemic diseases. a holoendemic disease is one for which a high prevalent level of infection begins early in life and affects most of the child population, leading to a state of equilibrium such that the adult population shows evidence of the disease much less commonly than do children (malaria in many communities is a holoendemic disease). a hyperendemic disease is one that is constantly present at a high incidence and/or prevalence rate and affects all groups equally. so probably family history.