Tryin to determine the independent and dependent variables for a biology question and the control group. Here is the question. You decide to clean...

Tryin to determine the independent and dependent variables for a biology question and the control group. Here is the question. You decide to clean the bathroom. You notice that the shower is covered in a strange green slime. You try to get rid of slime by adding lemonade juice. You spray 1/2 of shower with lemonade juice and other 1/2 with water. After 3 days of spraying equal amts 3 x a day, there is no change in appearance of green slime on either side of the shower. Need to identify DV, IV and control group