ENVIRONMENTAL POLLUTIONS
Pollution is the introduction of pollutants or contaminants into the natural environment that causes adverse changes while pollutant is a substance, waste material or energy introduced into the environment that has undesired effects that affects the usefulness of a resource. Chemical nature, concentration and persistence are three factors determine the severity of a pollutant.
Environmental pollution is the introduction of different harmful pollutants into certain environment that makes this environment unhealthy to live in. The most common pollutants are usually chemicals, garbage, and waste water.
Types of pollution
There are several types of pollutions that citizens of Islamabad are facing in their daily lives, such as;
Air Pollution
Water Pollution
Soil Pollution
Noise Pollution
Radioactive Pollution
Thermal Pollution
Light Pollution
Visual Pollution
Personal Pollution
The most important and significant among all of above is Air Pollution. Air Pollution has always accompanied civilization. Air Pollution starts from prehistoric times when man created the first fire.

Air Pollution in Islamabad
Air pollution is the contamination of atmosphere that disturbs the natural chemistry and composition of the air. Air Pollution can be in form of Particulate Matter, Vehicle or manufacturing exhaust, Forest fires, volcanic eruptions, dry soil erosion, and other natural sources, Building construction or demolition etc.
The composition of air as under;