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Question 21 of 40
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← 2020 MIT Invitational
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Part III: Water Monitoring and Analysis
Q2
💡 Explanation
Above what concentration of E.coli is a water sample considered unsafe to drink?
A.
0 colonies/100 mL
B.
50 colonies/100 mL
C.
100 colonies/100 mL
D.
200 colonies/100 mL
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