I agree with the first answer they would contrast is correct
Both were powerful nations and they served as trading hubs in their respective regions during that time.
The main and the most promising difference between active and passive transport is, passive transport does not require energy while active energy does.
Answer: c) the anticipated geographical spread of a disease based on past observances.
Explanation: Prevalence simply means the widespread of a thing or condition. In epidemiology, prevalence can be defined as the total number of people in a population that is affected by a medical condition or total number of cases of a disease in a population in a given period of time.
Expected prevalence of a disease is therefore the anticipated widespread of a disease or the anticipated total number of cases of a disease in a population based on past observed incidences.