Here's why:
* Sublimation: This is the process where a solid directly transforms into a gas without passing through the liquid phase. Think of dry ice (solid carbon dioxide) turning directly into gaseous carbon dioxide.
* Deposition: This is the reverse process of sublimation, where a gas directly transforms into a solid without passing through the liquid phase. Think of frost forming on a windowpane - water vapor (gas) directly turns into ice (solid).
Therefore, both sublimation and deposition bypass the liquid phase entirely.
