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liq [111]
2 years ago
13

What makes an experiment a controlled experiment?

Biology
2 answers:
Andru [333]2 years ago
8 0
The answer is All the variables are controlled accept one (i took the quiz hope this helps!)
icang [17]2 years ago
3 0
D: All the variables are controlled except one.
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The correct option is D.
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Explanation:

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