What is the purpose of using multiple control groups in an experiment?

To help you conclude that no uncontrolled factors significantly influenced your results.

To help you determine that your experimental results are valid

To help control for factors that aren't being tested but might affect results

Explanation:

well we can't tell you because we cant see the time give a screen shot or something.

starchy vegetables are high in carbohydrates.

starchy vegetables contain more carbohydrates than non-starchy vegetables.

explanation:

there are two primary categories of carbohydrates, essentially differentiated on the basis of their carbohydrate content (which is in the form of starch - a complex carbohydrate):

those vegetables which contain little amounts of starch are termed as non-starchy vegetables, and some examples include: artichokes, broccoli and bean sprouts.

vegetables high in their starch content are distinguished as starchy vegetables, and some examples include: potatoes, chickpeas and corn.