Acquired Reactive Perforating Dermatosis Last updated July 12, 2017 Reactive Perforating Collagenosis (RPC) is a very rare skin disorder that can manifest during early childhood or adulthood.
Fog is a mixture because it is an aerosol of water droplets or ice crystals in air. Fog can also contain molecules of acids or ammonia. Continue Reading
In both fog and cloud, the dispersed phase is a liquid and the  dispersion medium is air (gas). The only difference between them is  that the fog is formed in the region clo â¦ se to earth while clouds  are formed in the upper layer of the atmosphere. 12 people found this useful.