Which phrases describe air density ? Select three options.
increases as altitude increases
equals mass divided by volume
pushes molecules in one direction
exertsonore pressure as it increases
measures how tightly molecules are packed

The correct options are:

exerts more pressure as it increases

measures how tightly molecules are packed

equals mass divided by volume

Explanation:

Air density can be described as mass per unit of volume of the volume of air.

As the altitude increases, the air density tens to decrease. Hence, option A is not correct.

The density of the air determined how many atoms of air can occur in a particular volume, In other words, it determines how tightly or loosely atoms of air are packed in a particular volume.

Hence, when the air density will increase, the molecules will be more tightly packed and the pressure will be more.

the answer is the last option or letter d)