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.
He became so powerful he could tip a country into collapse. In 1839, John Davison Rockefeller is born into a poor Cleveland family. As a young boy he sells sweets to local children to help his family as his father, a conman known as âDevil Billâ, doesnât.