Read the text about the problems and benefits of city life. Fill in the gaps with the proper words and word conbinations.

Waste and sewage are two major problems for cities, as is air pollution comes from various forms of 1) ...
, including fireplaces, wood or coal-burning stoves, other heating systems and internal combustion engines.
Other problems include health consequences such as 2) ... diseases. Cities cause more 3) ... with more people from rural areas, thus giving rise to a higher 4) ... of tranmission of contageous diseases. However, many inventions such as inoculations, vaccines, and water 5) ... systems have lowered health concerns.
Crime is also a concern in the cities. Studies have shown that crime rates in the cities are higher and the chance of 6) ... after getting caught is lower.
Other disadvantages include the rising 7) ... numbers, noise and traffic and the high cost of living.
However, life in the city has a lot of advantages, too. A city facilitates interactions of all kinds. Benefits include a well- developed infrastructure, a competitive job 8) ... , a wider variety of social interests and activities, large local markets and basic 9) ... such as running water, heat and sewage 10) ... .