Operating margin ratio or return on sales ratio is the ratio of operating income of a business to its revenue. It is profitability ratio showing operating income as a percentage of revenue. Operating margin ratio is calculated by the following formula: Operating income is same as earnings before interest and tax (EBIT). Both operating income and revenue figures can be obtained from the income statement of a business.
Snakes live in nearly every habitat imaginable, from forests and lakeshores to prairies and deserts, and on every continent except Antarctica. In habitats like underground bur â¦ rows to the tops of trees, to ocean depths as much as 150 meters. Many snakes survive in regions that are extremely cold.
Grass snakes, as with most reptiles, are at the mercy of the thermal environment and need to overwinter in areas which are not subject to freezing. Thus, they typically spend the winter underground where the temperature is relatively stable.