Every substance, whether naturally occurring or artificially produced, consists of one or more of the hundred-odd species of atoms that have been identified as elements. However, these two branches of science meet in the discipline of biochemistry, which studies the substances in living things and how they change within an organism.Ĭhemistry, the science that deals with the properties, composition, and structure of substances (defined as elements and compounds), the transformations they undergo, and the energy that is released or absorbed during these processes.
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