Identify independent and dependent variable. ?

Question

three groups of rats are fed identical diets except for the amount of calcium. after 4 weeks on the diet, the rats are weighed to see if the amount of calcium in their diet effected their weight

Answer 1

inde. calcium

de. weight

dependent is dependent on the independent

Answer 2

An independent variable is one that you are allowed to actively change in an experiment. In this case calcium.

A dependent variable is one that is controlled (or at least is theorized to be affected) by the independent variable, in this case weight.