im not sure about the answer but i did the test and "The independent variable is the number of dry cells, and the dependent variable is the amount of energy available."is wrong
<span>The independent variable is the number of dry cells, and the dependent variable is the length of time the bulb works. </span><span>The independent variable is the length of time the bulb works, and the dependent variable is the number of dry cells. </span><span>The independent variable is the number of dry cells, and the dependent variable is the amount of energy available. </span><span>The independent variable is the amount of energy available, and the dependent variable is the number of dry cells. </span> I think the answer is <span>The independent variable is the number of dry cells, and the dependent variable is the amount of energy available.</span>
