As far as the soil goes, organic pollution can return to nature cyclically through being broken down by microbes and organic matter, or even by earthworms, turning back into water or carbon dioxide.
對土壤而言，有機汙染可經由生活於土裡的微生物、有機體，甚至蚯蚓等生物分解，還原為水、二氧化碳，再回歸自然循環。