owingtooverusingofcleaneroroverfertilization,the substance containing nitrogenandPhosphorusisdischargedintotheriver, givingrisetoAlgaebreedingcontributingtoeutrophication.thechainreactioncausesecologicalcatastrophe.themodularartificialfloaar plants crops to absorb nitrogen,phosphorus,reducethegrowthrateandareaofAlgae, andusethealgaefloatingontherivertomakefertilizers.evenwecanreachfurtherproductionofpurveyanceandbeautifyenvironment。
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