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.
Best Answer: A profit margin refers to a measure of profitability. It is calculated by finding the net profit as a percentage of the revenue. Where as the operating margin, is the ratio of operating income divided by net sales, usually presented in percent. The profit margin is an indicator of a company's pricing policies and its ability to control costs.