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
#6 Elizabeth Blackwell was the first female doctor in the United States. Between her terms Blackwell returned to Philadelphia and stayed with Dr William Elder. After some convincing, she was allowed to gain clinical experience at the charity hospital Blockley Almshouse.