God's greatest biological engineering on humankind; the jaws. The natural grinder created in such inspiring fashion. A pair of jaws come with 2 sets of teeth made for special tasks and functions. To munch, to gnaw, to break, to slice are some of its dramatic capabilities. The upper jaw stays while the lower moves so flexibly to grind food we eat. It also has its sentimental functions. With it, we can laugh and smile which adds to our entire face value. The jaws; an organ of which human can't live without.