Multiple Choice
A control experiment is one
A) that is repeated at least three times.
B) in which most of the variables are tightly controlled so that the effect of changing one variable can be determined.
C) that is tightly sealed and not exposed to oxygen so that the effect of oxygen on the experimental variables can be determined.
D) that produces an "xy" plot.
Correct Answer:
Verified
Correct Answer:
Verified
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