yes
The correct spelling is apostrophe.
Unless it means "it is", there is no apostrophe in "its". See related question.
anal insert
"Theres" isn't actually a word. "There's" is a word, and is a contraction of "There is". "Theres" must have an apostrophe to mean anything at all in the English language.
Yep :)
A possessive pronoun does not take an apostrophe. This is an exception to the rule that an apostrophe indicates the possessive. To write, 'the dog lost it's bone,' is not correct. The correct way is without the apostrophe: 'The dog lost its bone.' 'It's' (i.e., with an apostrophe) is correct only when used as a contraction of 'it is.'
Yes, there can be either apostrophe s ('s) or just an apostrophe (') at the end of the word.
Yes, that is correct. Program belongs to year.
No, the word is spelled "employees" that's correct.
Yes. Salesman's license is correct.
It's is the contraction for it is....so if you are using the contraction, use the apostrophe. If you are not, then do NOT use it.
The correct use of the apostrophe for a sign that reads "The Jakob's" should be "The Jakobs'" if it refers to something that belongs to multiple people named Jakob. If it refers to something belonging to one person named Jakob, it should be "The Jakob's."