Cold fronts<span> form when a cooler air mass moves into an area of warmer air in the wake of a developing extra-tropical cyclone. The warmer air interacts with the cooler air mass along the boundary, and usually produces precipitation. </span>Cold fronts<span> often follow a warm </span>front<span> or squall line. Hope this helps! </span>
Both organisms are composed of cells, the basic unit of life, with each cell surrounded by a cell membrane. The biggest difference between prokaryotes and eukaryotes is that eukaryotes have a nucleus.
Husk is separated from heavier seeds of grain by winnowing. Difference in the size of particles in a mixture is utilised to separate them by the process of sieving and filtration.