![](https://www.sciencenews.org/wp-content/uploads/2022/01/012022_RK_urban-microbe_feat.jpg)
Urban
An urban area, built-up area or urban agglomeration is a human settlement with a high population-density and an infrastructure of built environment.
An urban area, built-up area or urban agglomeration is a human settlement with a high population-density and an infrastructure of built environment.