Whats a manipulated variable and controlled?

ok i'm doing a science project about mice.


its said that if i place a bucket with dirty clothes in a warm place and another bucket with clothes in a warm place but put a cover on the bucket.


which is manipulated and which is controlled?


please help.


thanks :DWhats a manipulated variable and controlled?
I think manipulated equals controlled. And the other one is neither manipulated nor controlled.

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