Question

variables that have to be kept constant in an experiment are called ____ variables. using the graph, state the independent variable of the experiment (ignore units). does the type of fertilizer used affect the height that sunflowers grow up to? the type of fertilizer is the ____ variable in this question.

Explanation:

In an experiment, variables kept constant are called control variables. The independent variable is what is changed or manipulated to observe its effect on the dependent variable. In the sun - flower experiment, the type of fertilizer is what is being changed, so it is the independent variable.

Answer:

1. Control
2. Independent variable in the experiment (not specified in the graph details here but conceptually it's what's being manipulated)
3. Independent