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Paladinen [302]
2 years ago
9

I WILL MARK BRAINLIEST PLEASE HELP!

Biology
1 answer:
Mnenie [13.5K]2 years ago
3 0
The answer is the last one
“Cd”
Hope this helpsss and good luckk on ur examss :)))))
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Which of the following was a control variable in this experiment?
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<em><u>b</u></em>

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