SMART CITIES

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Across
  1. 2. In a way that uses time and energy well
  2. 3. To work or control a machine or system
  3. 5. Able to continue for a long time without harming the environment
  4. 8. The basic systems and services a city needs to function (roads, transport, etc.)
  5. 9. Related to protecting the natural world
  6. 10. city A city that uses technology to improve living conditions
Down
  1. 1. A tall building with many floors
  2. 4. Gases released into the air, often from vehicles or factories
  3. 6. The art and design of buildings
  4. 7. Easy and comfortable to live in