During the last decades, urban growth has created serious problems which the leaders of the countries are finding it difficult to cope with. Populations are constantly increasing without a real urbanization policy being adopted, with the inevitable consequence of the degradation of the physical environment and the collapse of the social fabric inside the cities and surrounding areas:destruction of the ozone layer, global warming, GMOs. The presence of wooded areas in urban areas remains an important asset on the social, planning and environmental levels.
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