Question

identify the independent variable. the depth of water in a pond that is being filled for a given amount of time.

Explanation:

To identify the independent variable, we analyze the relationship between the two variables (water depth and time) when a pond is being filled. The independent variable is the one that is manipulated or occurs independently, while the dependent variable depends on it. In this context, time is the variable that progresses on its own (we can choose or observe different time intervals), and the depth of the water depends on how much time has passed (deeper water with more time if filling at a constant rate, for example). So time is the independent variable as it does not depend on the water depth, but the water depth depends on the time elapsed.

Answer:

time