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It concludeswith a brief survey of the various topics in organic chemistry and a description ofthe way that we present them in this text. 1.1 Organic Molecules All organic molecules contain carbon (C) , virtually all of them contain hydrogen(H) , and most contain oxygen (O) and/or nitrogen (N) atoms.
Organic matter, organic material, or natural organic matter (NOM) refers to the large pool of carbon-based compounds found within natural and engineered, terrestrial and aquatic environments. It is matter composed of organic compounds that has come from the remains of organisms such as plants and animals and their waste products in the environment. Organic molecules can also be made by chemical reactions that don't involve life.