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Pathogens and waterborne diseases enter drinking water supplies from ________. A. Pesticides entering groundwater B. Upwelling C. Poorly treated wastewater or from feed lots D. Oil and chemical spills
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Pathogens and waterborne diseases enter drinking water supplies from ________.

A. Pesticides entering groundwater
B. Upwelling
C. Poorly treated wastewater or from feed lots
D. Oil and chemical spills
E. Excess nitrogen and phosphorus as agricultural runoff
C

User Mike McCoy
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2 votes

Answer:

a

Step-by-step explanation:

User Robwirving
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