on a map what do black dots usually represent?

On the map I am looking at right now, black dot represent cities. I don't know specifically what kind of map your looking at but I assuming from what I see it represents. If I'm incorrect feel free to notify me and I'll be happy to look deeper into the question :)

--BrainE

The answer to this question is  c. pharmaceutical accumulation  reclaimed water refers to the water that being used again after it already  used for agricultural purposes.this type of water often contains pharmaceutical accumulation because of the chemical fertilizer that is used for the plants is absorbed into the water.

The  franco-prussian  war, a  war  that was  led by prussia a coalition of  german  states, defeated  france. the  war  was the end  of  french  hegemony in europe and resulted in a unified  germany.  i hope this !