Uploaded on 2017-05-12 by Bruno

The photo shows three basic stocks and flows: Water, Energy(fuel/Electric) and people. It is the main Bus/Metro station in the city where all lines stop by at different points of the day taking and leaving people. the consumption of water, energy is evident in the station and in the building behind it. A lot of construction is happening on the background where materials and waste are moving every day and where people are moving/in out frequently.