Relier Pairs Enviromental impact. Relief and soilVersion en ligne Relief and soil par Gehistart Artgeo 1 Coastal relief is also altered by the construction of housing developments and marinas. 2 Desertification is land degradation, intensified by deforestation, erosion and overexplotation of water resources. The soil's fertility is lost. 3 Soil polution is the result of chemical waste substances. As a consequence, the soil become toxic. 4 Natural erosion is increased by human activity such as deforestation, farming, excessive grazing of pastureland and the use of heavy machinery 5 Some mines, quarries and transport infrastructure alter the relief. The landscape is marred and its economic value is lost.
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