Memphis is a city found in Tennessee, The United States Of America. It is located 35.15 latitude and -90.05 longitude and it is situated at elevation 84 meters above sea level. Memphis has a population of 646,889 making it the biggest city in Tennessee. It operates on the CDT time zone.
It depends on how zero is used, adjective, noun, or verb. As a noun, zero is singular, zeros is plural. There is a zero in the comment bar. They could use ten zeros and it would still mean zero comment(s).
Actually, zero is neither a negative or a positive number. The whole idea of positive and negative is defined in terms of zero. Negative numbers are numbers that are smaller than zero, and positive numbers are numbers that are bigger than zero. Since zero isn't bigger or smaller than itself (just like you're not older than yourself, or taller than yourself), zero is neither positive nor negative.