Question

the image shows a diagram explaining a concept. which concept does the diagram show?
○ temperature
○ altitude
○ air density
○ air pressure

Explanation:

The diagram depicts a column of air exerting force (from gravity) on the Earth's surface, labeled as 1 atm pressure at the surface. This directly illustrates the force exerted by the weight of air above a surface, which defines air pressure. Temperature relates to heat, altitude is height, and air density is mass per volume, none of which are the focus here.

Answer:

air pressure