Yes the word telescope is a singular noun.
The plural noun is telescopes.
The singular form is phenomenon.
The singular possessive noun for nature is "nature's."
The noun scientist is a singular, concrete, common noun.
The noun 'class' is a countable noun, a noun that has a singular and a plural form.Examples:I'm late for my dance class. (singular)My dance classes are expensive, I can't afford to miss them. (plural)Which class of fungus is this? (singular)How many classes of fungus are there? (plural)
No, it is just an ordinary noun. A proper noun is a name, and it needs a caaptial letter.
Yes. Hay is a singular noun. A Singular noun means one item only. So technically, hay is a singular noun.
The noun 'theory' is a singular noun. The plural noun is 'theories'.
The noun 'mice' is the plural form of the singular noun 'mouse'.
Yes the word question is a singular noun. The plural noun is questions.
The noun mailbox is the singular form; the plural is mailboxes.
Feet is a plural noun. Foot is a singular noun.
The noun juggler is a singular noun. The plural noun is jugglers.
The noun school is the singular form.The plural noun is schools.
The noun 'fun' is a singular non-count noun, it has no plural form.
The singular noun is "louse" and the plural noun is "lice."
The noun family is the singular form; the plural form is families.
The noun children is the plural form of the singular noun child.