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).
When a group noun is used with a singular determiner (e.g., a/an, each, every, this, that), singular verbs and pronouns are normal: The team is away this weekend; they have a good chance of winning. There are other contexts where the plural verb is more natural: My family are always fighting among themselves.