A green city is a clean city. This is because nature has its own way of keeping the environment clean. A green city implies plenty of trees and greenery. This keeps the environment clean and fresh. Also the leaves take in excess carbon dioxide from the surrounding, caused by heavy traffic, and give out refreshing oxygen.
Besides trees on the sidewalks, a city should have a good number of parks and gardens. This brings pollution levels down to minimum. It also reduces the risk of people suffering from respiratory diseases.
Man is a part of nature, not apart from nature. If there is a variety of vegetation in the locality, several animals and birds, that brighten up the atmosphere, will be found. Thus man’s state of mind is brightened. Stress levels are reduced. Indeed there is no doubt that the more greenery there is in the local habitat, the better conditions of living are for the inhabitants there.