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Alex_Xolod [135]
3 years ago
10

A control variable is: A. Measured to show the effect of a change. B. Collected to draw conclusions. C. Changed to test a hypoth

esis. D. Kept the same to make an experiment a fair test.
Biology
1 answer:
Sunny_sXe [5.5K]3 years ago
5 0
D. Kept the same to make an experiment a fair test.


‘a controlled variable’
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