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22 votes
If a scientist were looking for the source of a water pollutant, which would be the best location to test?

A. upstream in the same watershed where the pollution is found

B. downstream in the same watershed where the pollution is found

c. downstream in the same river basin where the pollution is found

D. upstream in the river basin next to the one where the pollution is found

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User Marian Spanik
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1 Answer

21 votes
21 votes
The answer to this question is C
User Diego Faria
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