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Which is the independent variable in this experiment?

Which is the dependent variable in this experiment?

Which is a controlled variable in this experiment?

1-angle of light

             2-temperature of light

             3- type of material

Explanation:

did this on edge and got it right, hope this helps. <33

segmentation=endoskeleton=backbone=coelom=tissues

try using substitution:

x + y - 6 = x - y. (i'm not giving you the exact answer). since 0 = x - y, then sub 0 in the equation with x - y. combine your like terms, and then use inverse operations, and you'll have your answer.

: -)