The Sustainable & Green City

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Across
  1. 3. Improving old buildings instead of demolishing them.
  2. 6. Harmful substances introduced into the air, water, or soil.
  3. 8. The uncontrolled expansion of urban areas into the countryside.
  4. 9. The capacity of a city to recover quickly from a disaster.
Down
  1. 1. The variety of plant and animal life within the urban environment.
  2. 2. Materials that are discarded and need to be recycled or reduced.
  3. 3. Energy from sources that do not run out like the sun or wind.
  4. 4. A two-wheeled vehicle that emits zero carbon dioxide.
  5. 5. The impact of a person or city on the environment.
  6. 7. A green space used for recreation and cooling the city air.