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valentinak56 [21]
3 years ago
10

During a controlled experiment, a scientist isolates and tests A. a conclusion. B. a mass of information. C. a control group. D.

a single variable
Biology
1 answer:
Svetlanka [38]3 years ago
6 0
During a controlled experiment, a scientist will isolate and test (D) a single variable. A conclusion, nor a mass of information can be isolated or tested. A control group is the group that would receive a placebo, so testing that would be futile.
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