A unique feature of a comparative essay is that you have several different organizational strategies to choose from. 1  Use a traditional outline form if you would like to, but even a simple list of bulleted points in the order that you plan to present them would help.
A warm front is the transition zone in the atmosphere where an advancing warm subtropical, moist air mass replaces a retreating cold, dry polar air mass. On a weather map, a warm front is drawn as a solid red line with half-circles. The position of the half-circles shows the direction of frontal movement.
A cold front separates a cold, dry air mass from a warm air mass. The cold air mass pushes under the warm air mass because of its higher density, forcing this warm air to rise. If enough moisture exists in the atmosphere at this time, then clouds and possibly thunderstorms could develop.