Answer:
I would say A : Endemic Diseases can result in decreasing population numbers: many people die from diseases, and others move away from or avoid moving to places where diseases are rampant.
Explanation:
Usually people do not know when a new disease will form. some people try to avoid the places infected so they stay safe. BUt diseases can easily decrease a population.
Hope that helped lol
Answer:
The population density of the city is 20,000 persons per square mile
Explanation:
Population density is defined as the total population living in a region divided by the total area of the region
Here
Population = 100000
Area of the city = 5 square mile
Density =
people per square mile
The population density of the city is 20,000 persons per square mile