3. Define BOD And COD And Explain Why Their Values For The Same Water Sample Can Differ Slightly….

3. Define BOD And COD And Explain Why Their Values For The Same Water Sample Can Differ Slightly. Explain Why Natural Waters Can Have A High BOD. (15 Pts) 4. What Is The Source Of Most Fluoride Ion In Natural Waters? How Can Fluoride Be Removed From Natural Water In Which Its Concentration Is Too High? (10 Pts) 5. What Two Other Chemical Methods, Other Than Apr 06 2022 12:55 PM

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