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exis [7]
4 years ago
5

50 POINTS: PLEASE ANSWER AS QUICK AS POSSIBLE!

Chemistry
2 answers:
Dvinal [7]4 years ago
6 0

Explanation:

The lack of a control group

____ [38]4 years ago
5 0
The answer would be “the lack of a control group.” To make the results more accurate, the scientists should have used a placebo group to use as a comparison.
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