To turn on the AutoRecover feature: 1  In Word 2010, from the menu, select 2  . In the window that opens, click the tab, icon, or list item. 3  If it is unchecked, check , and type a value next to minutes. 4  Click to make the change.
What is tooth enamel? Tooth enamel is a hard substance found in the shell of each of your teeth and is the part of the tooth thatâs visible when you look in your mouth. Enamel is considered the hardest substance in the human body. Itâs even harder than your bones; however, it can dissolve or decay when exposed to acid and a build-up of bacteria.
In truth, the tongue is not the strongest muscle in the human body. But, one does need to look at the type of muscle (voluntary or involuntary), and which type of cells it is â¦made from, plus what is its use.  The heart is the hardest working muscle in that it pumps blood throughout the entire body.