All elements in period 3 have this characteristic

There are six elements that make up most of the human body. which of the following is not one of these six elements?

In what for do plants utilize nitrogen? why do they need nitrogen?

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