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
Around 1859, Elizabeth Blackwell left New York City for England once again, this time touring the country as a medical lecturer. While abroad, she became the first woman to appear on the British medical register. Blackwell came back to the United States and worked as a physician during the Civil War.