During photosynthesis, a chemical called chlorophyll absorbs the light energy and encourages a reaction between carbon dioxide and water that results in glucose and oxygen. Oxygen is expelled as a waste product from the plant, and it enters the atmosphere.
The EPA was proposed by President Richard Nixon and began operation on December 2, 1970, after Nixon signed an executive order. The order establishing the EPA was ratified by committee hearings in the House and Senate. The agency is led by its Administrator, who is appointed by the president and approved by Congress.
July 20, 1971: Ehrlichman Announces Creation of âPlumbersâ. Nixon aide John Ehrlichman reports that he has successfully created the special investigations unit ordered by the president (see Late June-July 1971). His first choice to head the unit, speechwriter Pat Buchanan, refused the position.