What Conclusion Can the Scientist in This Scenario Make from Her

question 47

Multiple Choice

What conclusion can the scientist in this scenario make from her results?

• A) The test bacteria take more than 48 hours to grow in the laboratory when incubated at 37ᵒC.
• B) All contaminated water contains high levels of lead and other heavy metals.
• C) The amounts of lead used in the experiment killed the bacteria being tested.
• D) All experiments should be repeated three times or more.
• E) Lead-contaminated water does not contain any bacteria at all.

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