Question

identify the independent variable and dependent variable in this experiment. the size of the biofilm the amount of iodine independent variable dependent variable

Explanation:

The independent variable is the factor that is manipulated or changed in an experiment. The dependent variable is the factor that is measured and is expected to change in response to the independent variable. Here, the amount of iodine is likely being manipulated to see its effect on the size of the biofilm.

Answer:

independent variable: the amount of iodine
dependent variable: the size of the biofilm