Smog is a combination of a variety of harmful gases and fine , but toxic particles in air. We see it as a kind of fog usually above the city.
How much smog can be a dangerous by the fact that 50 years ago in London because of the smog died about four thousand people .
Types of dust in the air
In the air there is almost always a dust which may be more or less harmful . Water particles , dust from rocks , trees , dry leaves ... fall into a natural mass of dust . However, most often it is caused by automobile exhaust gases from industrial processes that usually contain a lot of carbon dioxide and other potentially toxic particles.
The most vulnerable cities
The amount of dust is the largest industrial cities.Veliki cities with smog- fighting in a variety of ways : using the mechanisms of ventilation, electrical machines that prevent dust , and put filters on the chimneys .
In a better position as the city where the winds are strong and frequent and where the population during the winter clamor electricity, so where is less active chimney , where I regularly refer from dust and harmful gases in combination with fog make smog .
Consequences
Smog is deposited on plants that are grown in close proximity to cities and roads . Car exhaust fumes contain lead among other things that can cause cancer . Because fruits of vegetables , teas and even buy in a trusted seller .
Of course , it is best to have your own little garden where you will entertain even green for their needs .
Number of adults and children suffering from respiratory diseases is higher in cities with higher concentrations of smog. If you are a resident of such an environment , you use every day for the outing , and the kids spend some vacations for example in rural areas.
