cities of future

2. a person who lives in the city
4. an area in a city where a large number of people live
7. the powerful effect that something has on somebody/something
10. replaced naturally or controlled carefully and can therefore be used without the risk of finishing it all
12. a long line of vehicles on a road that cannot move or can only move very slowly
13. The system of buses, trains, etc. provided by the government or by companies, which people use to travel from one place to another
14. involving the use of natural products and energy in a way that does not harm the environment
15. to work in a particular way

1. a very tall, modern building, usually in a city
3. the basic systems and services that are necessary for a country or an organization to run smoothly, for example buildings, transport and water and power supplies
5. the amount of carbon dioxide that a person or organization produces by the things they do
6. fit to live in
8. an area that has been concerted for the use of pedestrians only, by excluding all motor.
9. a garden built on the top of a building
11. working well without wasting time, money, or energy