Uploaded on 2016-04-21 by Rikcho

1. Citizens, transport, nature (flora and fauna). 2. Citizens: Some of them live in our cities permanently, while others enter and salts every day for business, work, leisure and fun. Transportation: Transport vehicles cross the city by roads or pathways, these are flows, but as these, or previous car lots where cars seized or simply messed generate a stock in the city. Nature: Our parks can be stock a certain period, but with form over time either natural or artificial flora may change. 3. The future is uncertain but can be a bit predictable, suppose you are 500 years of our present time, with the evolution of the Internet, our cities could reduce their flow and increase stock, because many activities are able to do at home from study and work, to the supermarket visits and bill payment. Similarly perhaps vehicles transporting fall in quantity both flow and stock because vehicles are no longer accumulate on land, while our setting and harmony with nature can increase or decrease depending on the path we choose to development and use of materials. [1]: https://edxuploads.s3.amazonaws.com/14611986721638703.jpg