Micronutrients as the name suggests are needed in small amounts as compared to the other four basic nutrients. But they are so important for your health that U.S. Food and Drug Administration  (FDA) has formulated a daily a daily recommended allowance (RDA) for consumption of vitamins and minerals. On current nutritional labels you will find the
 percent of the Daily Value or "% Daily Value "or "%DV". This refers to the percentage of the RDI contained in a product. Note that as of July 1995, the  FDA requested that terminology on labels reflect the  new RDI's (Recommended Daiy Intake) which will  replace the current terminology of RDA's. This table provided will highlight the importance,  sources and deficiency causes of minerals and vitamins.