Question

which correctly lists three characteristics that are used to describe air?
○ altitude, density, radiation
○ density, radiation, mass
○ mass, pressure, density
○ pressure, altitude, radiation

Explanation:

Altitude is a location property, not a characteristic of air itself; radiation is an energy transfer related to air but not a defining property of air. Mass, pressure, and density are all intrinsic or measurable properties directly describing air.

Answer:

mass, pressure, density