Yes... indeed it is!
No, it would not be capitalized, but it should be pluralized.
Yes because it is a proper noun. The actual street name is Third Avenue ... which is not necessarily the 3rd street in the city.
Yes, Riverside Drive should be capitalized because it is a proper noun referring to a specific street or location.
Earth, as in we live on the planet Earth, is supposed to be capitalized. Earth, as in the dirt we walk on, is not supposed to be capitalized.
Usually, yes a phase of the moon is supposed to be capitalized.
"Westend Avenue" is typically written as two words: "West End Avenue." The name refers to a specific street in New York City, and both "West" and "End" are capitalized as part of the proper noun.
No, it shouldn't be capitalized.
No it shouldn't be capitalized.
There is no antonym for avenue; the opposite of avenue, street, or road is the absence of an avenue, street, or road.
Yes, America should be capitalized.
no