Of coalâs many environmental impacts, none are as harmful, long term, and irreversible as global warming. Global warming is driven by emissions of heat-trapping gases, primarily from human activities, that rise into the atmosphere and act like a blanket, warming the earthâs surface.
An executive officer (often abbreviated XO) is generally a person responsible for running an organization, although the exact nature of the role varies depending on the organization. Contents.he US Air Force uses the term executive officer for officers assigned as personal staff officers to general officers. Their role is similar to aides-de-camp in the US Army, Marine Corps and Air Force and flag aides and flag lieutenants in the US Navy and Coast Guard.
A Definition. The definition of chief executive officer (almost always) depends on whether a business is a corporation or not, that is, whether it (usually) has a board of directors or not.n a form of business that is usually without a board of directors (sole proprietorship, partnership, etc.), the chief executive officer is (usually) the singular organizational position (other than partnerships, etc.) that sets the direction and oversees the operations of an organization.