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Kate gathered three boxes of the same size made of different materials: glass, clear plastic, and aluminum painted black. She placed them on a windowsill in the sun for an hour and then measured the warmth of the air in each box. In this experiment, the warmth of the air is a(n) .
A
Independent variable
B
Constant
C
Control
D
Dependent Variable
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Kate gathered three boxes of the same size made of different materials: glass, clear plastic, and al...
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