Green Cities

5. The top of a building.
7. A change in something or in someone’s situation.
8. Advantages that you get from something.
10. An area of a town or city where there are houses rather than factories or shops.
11. A large building containing many apartments or flats.
12. To grow something naturally.
14. Organic substance that is put on the soil to make plants grow.
15. A big green space that is used to grow fruits, vegetables, and other plants.
17. A substance used in chemistry or produced by a chemical process.

1. To gather crops from the fields.
2. An organization which brings the benefits of a forest into the heart of our cities.
3. To do something that produces a change in something or in someone’s situation.
4. plant a type of plant that is produced somewhere other than its current location.
6. Someone who does a job willingly without being paid.
9. A group of interacting people living in a common location.
13. A permanent change in the Earth’s weather conditions.
16. Growing food without using artificial chemicals.