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AnnZ [28]
3 years ago
9

When more than one variable in an experiment is changed at a time, the scientist A. made a systematic error that needs to be cor

rected. B. cannot tell which change produced the results. C. cannot accurately measure both variables at the same time. D. needs to conduct more trials in order to get conclusive results.
Advanced Placement (AP)
1 answer:
inessss [21]3 years ago
4 0

b- cannot tell which change produced the results

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