It's an <span>undisciplined child.
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Photon</span>
Answer:
Control
Explanation:
In a study of whether a drug might help reduce depression, research participants were assigned to take the drug or a placebo. Those who took the placebo were in the control condition.
In an experiment, the control group are not given the treatment material (drugs in this case). This is to have a basis for comparison of results of the study.
A placebo drug is manufactured not to have any treatment effect on the subjects.
The answer is mariana islands
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He discovered the "new world", he discovered that the world wasn't flat , he brought new diseases to the new world which killed many. (If you need more lmk)