trancytarts
trancytarts trancytarts
  • 15-09-2020
  • Biology
contestada

Describe why this is a controlled experiment.
A. Only one variable is changed
B. two variables are changed
C. the plants grew tall in the control group
D. the plants grew tall in the experiment

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truelyaprincess
truelyaprincess truelyaprincess
  • 15-09-2020
A Only one variable changed
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