Asked by LOVE

Brand X Brand Y No cleanser
Area(mm2) Area (mm2) Area (mm2)
0,0,0 0,0.25,1.0, 0,0.50,
,0.20 2.75 1.25,3.0


Which of the following is a
constant, or control variable, in this experiment?

The brand of cleanser that didn't work. (MY ANSWER)

The results observed over four days.

The brand of cleanser that worked best.

Answers

Answered by Damon
I think your control is no cleanser.
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