Translations:Benutzer:Arian/Klett-Mini-Test/1056/en

(laughing gas N₂O) or elemental nitrogen (N₂) upward into the metabolic pole. These losses amount to roughly 25% each of the total input of synthesised nitrogen salts — that is, equal portions on both sides. On the one hand they contaminate groundwater and well water, or cause eutrophication of surface waters. On the other hand, through their emissions, they contribute substantially to the nitrogen oxide burden of the atmosphere and thereby to climate change. The remaining 50% of the nitrogen input account for a reduction and one-sided narrowing of the biological activity of soils as well as for a forcing of plant growth with simultaneous weakening of their organisational forces, their nourishing quality and healing efficacy. Synthesised nitrogen salts also contribute to the floristic and faunal impoverishment of species diversity in the landscape. It is they — and only they — that make possible the narrowing of crop rotations all the way to monoculture, and beyond that, cultivation in nutrient solutions (*hydroponics*).