Consumed phosphate in plant biomass Is excreted Plants use phosphate – converted into organic biomass Phosphate in Soil Large organisms Consume microbes and excrete phosphate Micro- fauna/flora Consume phosphate Dissolved Phosphate Excreted phosphate from natural land cycle enters water Fertilizer Agriculture Fertilizer run-off Mining of Phosphate rock Sediments from water form phosphate rock – over millions of rock Large organisms Consume microbes and excrete phosphate Micro- fauna/flora Consume phosphate Dissolved Phosphate Excreted phosphate from natural land cycle enters water
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