Answer:
The number of barnacles on the boat
Explanation:
The number of barnacles of the boat is an independent variable because an independent variable is that variable that can stand alone or does not
changee or has no variation due to dependent variable.
It is not affected by changes in dependent variable. It's changes does not depend on dependent variable.
The number of barnacles on the boat is an independent variable and it changes does not depend on The amount of paint applied to the boat and The additive anti-barnacle treatment.
