exists and is an alternate of . When a female fetus is born, her ovaries already contain approximately 2 million immature eggs (called oocytes). As a gril develops through childhood, the number of oocytes in her ovaries decrease until puberty, when the first mature ovum is released, at which point her ovaries contain approximately 400,000 oocytes.
John Davison Rockefeller Sr. (July 8, 1839 â May 23, 1937) was an American business magnate and philanthropist. He was a co-founder of the Standard Oil Company, which dominated the oil industry and was the first great U.S. business trust. Rockefeller revolutionized the petroleum industry, and along with other key contemporary industrialists such as Andrew Carnegie, defined the structure of modern philanthropy.
1 Illustrated article about John D Rockefeller and the Standard Oil Company. 2  Article examining the philanthropy of noted industrialists including John D Rockefeller. 3  Obituary, The New York Times (24 May 1937).  4 A Capital Life, a New York Times book review of Titan by Ron Chernow (1998).