1. Similar or pertaining to an organism (in the sense of an open-system) with clear and functional internal structure and a predictable life cycle of birth, growth, decay, and death.
2. Natural or synthesized (see synthesis) compounds containing carbon. Natural organic compounds are found in all living systems, and in natural products such as coal, oil, sugars, wood (water is an inorganic compound). Synthesized organic compounds are manufactured products such as calcium carbonate, sodium carbonate, urea. Inorganic compounds (such as metals) are obtained usually from mineral sources. In scientific terms, no clear line divides organic and inorganic chemistry.
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