The world is pollution free.
http://wiki.answers.com/Q/Rank_of_important_cities_of_the_world_regarding_air_pollution"
The obsolete technologies and lack of "green" laws
As of currently, the city of Delhi in India ranks among the world's most polluted cities, with high levels of air pollution caused by factors such as vehicle emissions, industrial activities, and crop burning. Other cities known for significant air pollution include Beijing in China and Lahore in Pakistan.
Water pollution kills birds, fish and other animals. What can factories do to cut down on air pollution?
Vehicle exhaust fumes is the main air pollutant in many cities world wide, not just in Japan.
yes it is pollution free
1.) Crowding in cities.2.) Higher pollution in cities.
cities
becuase there is to much pollution in the cities and they are destroying the city or the world.
Car pollution is a significant issue globally, contributing to air pollution and climate change. The impact varies based on factors like the number of cars in use, emission standards, and fuel types. Countries are taking steps like promoting electric vehicles and improving public transportation to reduce car pollution.
Some of the least polluted cities in the world include Reykjavik in Iceland, Honolulu in Hawaii, and Stockholm in Sweden. These cities have implemented strict environmental regulations, prioritize sustainability, and have low levels of air and water pollution compared to other cities.