One of the Millennium Development Goals [2] leading to many problems in the city's congestion and pollution and the environment that leads to other problems, particularly natural disasters.
Of development [2], leading to various problems such as congestion, pollution and the urban environment. That led to other problems, especially natural disasters.
The development of 2 [] which leads to many problems, the crowded city, pollution and environment that leads to other problems, especially the natural disasters.