Question

imagine that you wish to compare two different diets that will be fed to tadpoles raised in a lab. one diet is meat - based fish food, and the other is the traditional diet of boiled lettuce. you want to see if the meat - based diet will be associated with an increase in the average weight of the tadpoles. in your experiment, you keep all other factors, such as tadpole density per pan, temperature, ph, and the amount of food the same. the only difference between your control and experimental groups is the type of food the tadpoles receive. what is the independent variable for the tadpole diet experiment?

tadpole size
lab conditions
diet
species of tadpole

Explanation:

In an experiment, the independent variable is the factor that is deliberately changed. Here, the type of diet (meat - based fish food or boiled lettuce) is being changed to observe its effect on tadpole weight. Other factors like tadpole size, lab conditions, and species of tadpole are kept the same.

Answer:

diet