Digestion begins in the mouth, where chemical and mechanical digestion occurs. Saliva or spit, produced by the salivary glands (located under the tongue and near the lower jaw), is released into the mouth. Saliva begins to break down the food, moistening it and making it easier to swallow.
By Elizabeth Schofield Submitted On December 23, 2012. The purpose of a newsletter is to provide information pertaining to a product or service to a targeted audience. Newsletters, done effectively, can also create a company's credibility and build an organization's identity.
Facebook offers a wide array of functions such as birthday reminders and event calendars that allow users to keep track of important events in each other's lives. One fun application of this feature is that Facebook users can send each other greeting cards that post personalized messages on each other's walls and pages.