In the countryside than in urban air. in the rural areas than in cities, because it is likely to be a lot more than in the city, but there are no tall buildings.
In the countryside, it has gotten better over the city. It is located in the countryside than in the city because there are not a lot of cities have tall buildings.
Being in the countryside will have good air than in the city. In rural areas will be more than in the city because there will be no more need in the city"s high-rise buildings.