A pond near a city park is found to be contaminated with both bacteria and excess nitrogen. The bacteria most likely came from _____, and the excess nitrogen most likely came from _____.
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sediment; pesticides
animal waste; fertilizers
inorganic metals; sediment
runoff; sewage
animal waste; fertilizers
inorganic metals; sediment
runoff; sewage
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Animal waste
Sewage
Sewage
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