(a) Microorganisms play a role in the formation of hardness in groundwater. True or false? Explain....

(a) Microorganisms play a role in the formation of hardness in groundwater. True or false? Explain.

(b) In the United States, chlorine is preferred as a disinfectant over ozone because it has a residual. Why is the presence of a residual important? In recent years ozone has been replacing chlorine as the primary disinfectant in the United States. What are the advantages and disadvantages of this?

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Ally Wells answered 1 year ago

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