Question

mention some problems being faced by the big cities this days.....

Answer 1

Big cities faced a lot of pollution and a lot of traffic jam and some other problems etc.

Answer 2

Some problems being faced by the big cities these days are :

Rapid growth of population in cities:
In 2008, more than half of the world human population, 3.3 billion people, lived in urban areas. By 2030, this is expected to balloon to almost 5 billion. Most of this growth will be in developing countries. The urban population of Africa and Asia is expected to double between 2000 and 2030 (UNFPA, 2007).

High poverty level of Cities:
Asia's poor represent about 70% of the world's poor-nearly one in three Asians is poor. Almost 25% of Asia's urban population is poor, and the rate is increasing, as there is a continuous influx of poor people into cities.

Inadequate basic services:
Large number of Asian cities cannot adequately provide urban basic services to the increasing number of urban residents. Less than half of the cities population is covered by water supply. A number of cities do not have efficient systems of solid waste collection. Majority of the cities in developing countries do not have sewerage system connections, and sanitary landfill facilities.

Environmental degradation:
With an increasing population density, especially in slums areas, environmental and health problems are rising. In addition to mitigating air and noise pollution and controlling wastes, managing the consumption of non-renewable resources have become more serious concerns.