The three smallest bones in the human body are found in your ear, where they vibrate in response to sound. Saturday, March 29, 2014 by: David Gutierrez, staff writer. Tags: ear, auditory ossicles, hearing. Most Viewed Articles.
Best Answer: The ZIP code is the system of postal codes used by the United States Postal Service (USPS). The letters ZIP, an acronym for Zone Improvement Plan,[1] are written properly in capital letters and were chosen to suggest that the mail travels more efficiently, and therefore more quickly, when senders use it.
Full Answer. The United States Postal Service began using two-digit area codes in 1943 in order to define postal zones in larger cities. Beginning in 1967, the ZIP code became progressively mandatory. The word ZIP comes from the acronym for Zone Improvement Plan.. The original ZIP code was composed of 5 digits.