Gas chromatography stationary phases are typically liquid phases coated on 300-(m diameter porous particles or onto the wall of the column. Liquid chromatography stationary phases are hydrocarbon layers bonded to silica. Why the difference

explanation:

crosscutting concepts have application across all domains of science. as such, they are a way of linking the different domains of science. they include patterns; cause and effect; scale, proportion, and quantity; systems and system models; energy and matter; structure and function; and stability and change.

dynamic equilibrium is the answer.

the answer is:  

line graphs show patterns in data with variables that change over time; whereas, circle graphs show data as parts out of a whole (such as out of 100%).