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
In 1832, the Blackwell family moved to America, settling in Cincinnati, Ohio. In 1838, Samuel Blackwell died, leaving the family penniless during a national financial crisis. Elizabeth, her mother, and two older sisters worked in the predominantly female profession of teaching.