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21 March, 09:16

Which of the following could negatively affect the reliability of an experiment? A. testing only one variable at a time

B. having variables that are difficult or even impossible to control

C. keeping the control monitored to make sure it remains unchanged

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  1. 21 March, 10:26
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    The answer to this is B. When conducting an experiment, you should only manipulate one variable at a time and all other variables should be kept as similar as possible in order to ensure that the results are caused by one thing and not another.
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