Homer notices that his shower is covered in a strange green slime

Homer notices that his shower is covered in a strange green slime. His friend Barney tells him that cocnut juice will get rid of the green slime. Homer decides to check this out by spraying half the shower w/ coconut juice. 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 was the initial observation? identify the control group independent variable dependent variable what should homer's conclusion be?