Water (5) Deforestation (4) Eau (4) Eau (4) eau (4) Sierra Madre occidentale (4) Rain and rainfall (3) North (The word) (3) Soils (3) Erosion (3) Erosión (3) Suelos (3) Érosion (3) Pédologie (3) Nord (point cardinal) (3) Érosion (3) Sols (3) Déboisement (3) érosion (3) Mexique (3) Département du Nord (2) Law and legislation (2) Seepage (2) Pressure (2) Pastures (2) Oases (2) Mountains (2) Landscapes (2) Land reform (2) Equilibrium (2)