Astudent is designing a survey to find the amount of water that a typical american household can conserve every year by using water efficient showerheads. what is the most
appropriate unit for measuring the water conserved?

The most appropriate unit for measurement of water conserved or stored is the acre-foot , if the conserved volume is low then the ideal unit is cubic foot.

Explanation:

it would be c. xylem.

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.