The amount of lead in the blood and tissues, as well as the time course of exposure, determine toxicity. Lead poisoning may be acute (from intense exposure of short duration) or chronic (from repeat low-level exposure over a prolonged period), but the latter is much more common.
The COO is responsible for the daily operation of the company, and routinely reports to the highest ranking executive, usually the chief executive officer (CEO). The COO is usually the second in command at the firm, especially if the highest ranking executive is the Chairman and CEO.
Chief Executive Officer.(CEO) The executive who is responsible for a company's operations, usually the President or the Chairman of the Board Chief Operating Officer.(COO) Chief Operating Officer.The executive who is responsible for the day-to-day management of a company.he CEO oversees the company's finances and strategic planning. Chief Operations Officer-is a corporate officer responsible for management of day-to-day activities of the corporation.