CHINA

3. – A type of air pollution, often seen as a thick fog in cities (4 letters).
5. – Industrial buildings that often contribute to air and water pollution (9 letters).
9. – The removal of trees, often due to urban sprawl or industrial use (12 letters).
10. Quality – A measure of pollution in the air; often very poor in China’s big cities (10 letters).
11. – Unwanted materials produced by human activity, often improperly disposed of (5 letters).
12. Rain – Precipitation that contains harmful chemicals due to air pollution (9 letters).
13. – A primary energy source for China’s industries, contributing heavily to air pollution (4 letters).
14. – Related to breathing; many people suffer from these diseases due to pollution (11 letters).
15. – The process of turning rural areas into cities (12 letters).

1. – The physical and organizational structures, such as roads, that support a city (14 letters).
2. Contamination – The pollution of rivers and lakes due to industrial waste (17 letters).
4. – When an area has too many people, often leading to pollution and resource strain (14 letters).
6. – The development of industries in a country on a wide scale (16 letters).
7. Gases – Gases like carbon dioxide that contribute to global warming (15 letters).
8. – A cause of urban congestion and air pollution from vehicles (7 letters).