Which answer it is ?

Why do carbohydrate molecules function so well as fuel for the body?

Of seawater increases with decrease in the temperature. therefore, the cold water sinks to the deeper layers at the bottom

There is a liquid capsule inside a cup full of liquid. the cup full of liquid has salt in it and the liquid capsule has no salt in it. in which direction will the solvent flow? a. the salt does not have to move b. from the capsule to the larger cup c. equally between the capsule and the cup d. from the larger cup to the capsule