Chelsea holds a B.F.A. from the Maryland Institute, College of Art (2005) and an M.A.T. from Johns Hopkins University (2011.) In addition to cartooning and being a first-time mother, she has worked as an elementary school art teacher.
The concept of primary energy is used in energy statistics in the compilation of energy balances, as well as in the field of energetics. In energetics, a primary energy source refers to the energy forms required by the energy sector to generate the supply of energy carriers used by human society.
Primary Sources. Primary sources are produced usually by a participant or observer at the time an event or development took place (or even at a later date). Primary sources include manuscripts such as letters, diaries, journals, memos. Newspapers, memoirs, and autobiographies also might function as primary sources.