Here's why:

* Independent Variables: These are the factors that are manipulated or changed by the researcher in an experiment. They are "independent" because their values are not influenced by other variables in the experiment. The goal is to see how changes in the independent variable affect the dependent variable.

For example, in an experiment studying the effect of fertilizer on plant growth:

* Independent Variable: The type or amount of fertilizer used.

* Dependent Variable: The height or weight of the plants.

Let me know if you have any more questions!