What happens to food after it is eaten? The body uses various kinds of food for energy and growth. To be used, however, food must be converted into nutrients that can be carried through the bloodstream and absorbed by the organism’s cells. This conversion process is called digestion.
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"Digestive system." Britannica School. Encyclopædia Britannica, Inc., 2015. Web. 2 Sep. 2015. <http://school.eb.com/levels/middle/article/274004>.