The global carbon cycle is now usually divided into the following major reservoirs of carbon interconnected by pathways of exchange: 1  The atmosphere. 2  The terrestrial biosphere. 3  The oceans, including dissolved inorganic carbon and living and non-living marine biota.
Elizabeth Blackwell: First Woman M.D. (Barnard Biography Series, Vol. 2) Mar 1, 1997
Elizabeth Blackwell said she turned to medicine after a close friend who was dying suggested she would have been spared her worst suffering if her physician had been a woman. When she graduated from New York's Geneva Medical College, in 1849, Elizabeth Blackwell became the first woman in America to earn the M.D. degree.She supported medical education for women and helped many other women's careers.hen she graduated from New York's Geneva Medical College, in 1849, Elizabeth Blackwell became the first woman in America to earn the M.D. degree.