Advanced Placement (AP), 22.07.2019 01:30, maccaudill02

Which of the following might be legitimate justification for avoiding treatment of drinking water obtained from groundwater? i. the groundwater is unaffected by surface pollution. ii. the groundwater has a rate of flow of 1 cm/year. iii. the groundwater is naturally disinfected. a. i only b. ii only c. iii only d. i and ii only e. i and iii only

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Which of the following might be legitimate justification for avoiding treatment of drinking water ob...