Sustainability thumb|upright|Terraces, conservation tillage and conservation buffers reduce soil erosion and water pollution on this farm in Iowa.
sustainaBilITY thUMB|uprIgHt|TERrAcEs, coNsErVation tiLlAge anD coNservation buFferS rEduCe soiL eroSIon and waTEr PolLuTiOn on this FArm In iOwa.