Our planet Earth is only a tiny part of the universe, but at the moment - this is the only place where we can live.People have always polluted all around. But until now pollution was not such a serious problem. People living in rural areas and did not produce such a large number of contaminants that could cause a dangerous situation on a global scale.With the development of the highly congested industrial cities that emit huge amounts of pollutants into the environment, the problem has become increasingly serious. Today, our planet is in grave danger. Acid rain, global warming, air and water pollution, overpopulation - issues that threaten human life on Earth.To understand how air pollution affects our bodies, we need to know exactly what it is pollution. The pollutants, which are harmful to our respiratory system, called particulates. Particulates - a small solid particles that we see in sunlight. It is derived from incomplete combustion of fuel in engines, such as an internal combustion engine, road dust and smoke from burning wood/