Question

the passage below describes an experiment. dustin kept a flower garden in his yard. he used food scraps from his kitchen as a sustainable way to make compost for his garden. he wondered whether he could make the food scraps decompose more quickly by adding worms to the compost bins. dustin added the same amount of food scraps to six small compost bins and then added 10 worms to two of the bins, 20 worms to two other bins, and no worms to the remaining two bins. after one month, he measured the percentage of food scraps that decomposed in each bin. identify the independent variable and dependent variable in this experiment. the percentage of food scraps that decomposed the number of worms in the compost bins

Explanation:

The independent variable is what's manipulated (number of worms, as Dustin changes it). The dependent variable is what's measured (decomposition percentage, as it depends on worm number).

Answer:

Independent variable: the number of worms in the compost bins
Dependent variable: the percentage of food scraps that decomposed