Scientific Method Question
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Homer notices that his shower is covered in a strange green slime. Homer decides to spray half of the shower with coconut juice, thinking this will kill the slime. He sprays the other half of the shower with water. After 3 days of "treatment," there is no change in the appearance of the green slime on either side of the shower. What is the independent (manipulated) variable in his experiment?
- water
- green slime
- coconut juice
- his shower
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