No, because "and" is a conjunction, which is a word that puts together phrases and clauses to create a sentence.
NO
No
you can start a senetence with or but it wont be proper grammer.
Yes, sure.
You did a proper job of it.
It's perfectly fine to start a sentence with likewise, just make sure you have a comma after it.
No it won't, unless it is at the start of a sentence.
No, a sentence can begin with any kind of word. The first letter of a sentence is always capitalized to mark the start of the individual sentence, not because the word is a proper noun.
Yes.
Only if its plural, like conclusions.
No, because "and" is a conjunction, which is a word that puts together phrases and clauses to create a sentence.
No, unless it is the first word of a sentence or part of a proper noun.