There are three main sources of heat in the deep earth: (1) heat from when the planet formed and accreted, which has not yet been lost; (2) frictional heating, caused by denser core material sinking to the center of the planet; and (3) heat from the decay of radioactive elements. CROSS SECTION shows Earth's structure.
â The operating margin was an especially useful metric or ratio during the meeting as we wanted the discussion to include revenue statistics.
While there are a few different kinds of profit margins, including âgross profit margin,â âoperating margin,â (or operating profit margin) âpretax profit marginâ and ânet marginâ (or net profit margin) the term âprofit marginâ is also often used simply to refer to net margin.