Yamina Saheb OA - Liste ➔ vers Sélection d’auteur(e)s décembre 2014 ENOnly 60 Years of Farming Left If Soil Degradation Continues (05/12) - Chris ArsenaultGenerating three centimeters of top soil takes 1,000 years, and if current rates of degradation continue all of the world's top soil could be gone within 60 years, a senior UN official said Afficher plus.. Voici le lien vers cette page Présélections : Vidéos Listing généré avec
décembre 2014 ENOnly 60 Years of Farming Left If Soil Degradation Continues (05/12) - Chris ArsenaultGenerating three centimeters of top soil takes 1,000 years, and if current rates of degradation continue all of the world's top soil could be gone within 60 years, a senior UN official said
décembre 2014 ENOnly 60 Years of Farming Left If Soil Degradation Continues (05/12) - Chris ArsenaultGenerating three centimeters of top soil takes 1,000 years, and if current rates of degradation continue all of the world's top soil could be gone within 60 years, a senior UN official said