In scientific experiments, what is the purpose of identifying a dependent variable?

Identifying a dependent variable is crucial in scientific experiments because it allows researchers to measure how this variable responds to changes made to the independent variable. The dependent variable is the outcome that is being tested and observed. By tracking its changes, scientists can establish cause-and-effect relationships. For example, if an experiment investigates how varying the amount of sunlight affects plant growth, the growth of the plants would be the dependent variable it changes based on the amount of sunlight, which is the independent variable. This relationship provides valuable data that helps in forming conclusions about the impact of the independent variable on the experiment.