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