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Biology, 30.08.2020 01:01 ellamai10123

What is a controlled variable in an experiment? a
b
A factor that is purposely left the same.
A factor that is purposely changed and being measured.
A factor that will be observed and measured.
A factor that is purposely being changed.
С
d A factor that is purposely being changed

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What is a controlled variable in an experiment? a
b
A factor that is purposely left the...

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