Uploaded on 2019-08-31 by María Luján Blanco Sciancalepore

People. It is a FLOW when the concentration of people moves every day to the capital either by car, train or subway. I show two images of the media in which they are transported. It is a STOCK when it is the usual concentration of the area. I show as an example a neighborhood club or a square. Food. It is a STOCK for example when it is in stores, stores or places of sale. It is a FLOW since it is produced on the outskirts of the capital and enters through trucks. Water. It is a STOCK when it is constant in time, for example a lagoon in a park. It is a FLOW when it changes its level or moves as the drinking water system that enters the capital. I show an image that shows an area that is flooded three times a year and another where there is a waterfall of natural water that is used as a source for water supply.