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iosangel:
Which substance was the control in this experiment? https://prnt.sc/pbsskm
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iosangel:
I think the control group would be like the one where it hasn't been touched or experimented with
iosangel:
but i dont know which it would be
JSVSL7:
You're right on with that definition but when it comes to categorical experiments, researchers normally use neutral and arbitrary things such as water or air. So here it's water.
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