Air is one of the most important elements of the environment that sustains us. It is a natural gift and a free resource. The air is polluted in various ways. Ground vehicles use fuel oil and that create smoke. The smoke is mixed with air and thereby pollute it. Factories and plants are also responsible for air pollution because they also create smoke. Polluted air containing CO2, CO, NO2, SMP, SO2 and lead oxides. People in most cases it breathe contaminated air.
