In an experiment to determine how different amounts of sunlight affect plant growth, what is the independent variable?

In an experiment that tests how temperature affects the solubility of salt in water, what is the dependent variable?

In an experiment to see how varying amounts of fertilizer affect crop yield, which variable is the independent variable?

In a study investigating the effect of different types of music on student concentration, what is the dependent variable?

In an experiment to test how different light colors affect the growth rate of plants, what is the independent variable?

In an investigation to see how the amount of study time affects test scores, what is the dependent variable?

In a scientific experiment to examine how different concentrations of sugar affect the fermentation rate of yeast, what is the independent variable?

In an experiment to study how different workout intensities affect heart rate, what is the dependent variable?

In a study looking at how different types of soil affect plant growth, what is the independent variable?

In an experiment that tests how varying levels of noise affect a student's ability to focus, what is the dependent variable?