Yes there should be a period.
You put a period at the end of the sentence to indicate that the sentence has ended.
No. You put only one period.
At the end of this sentence we had to put a period.
no
So you puR period after a website link if at end of sentence
no matter what you usually have to put a period after an apostrophe because it's the end of a sentence.
At the end of an imperative sentence you put a period, because it is a command, direction, or request.
The general rule is to place a comma after "PhD" when it is used as a suffix after a person's name (e.g., John Doe, PhD). However, if "PhD" is used in the middle of a sentence to describe someone's credentials, no comma is needed (e.g., John Doe has a PhD in Economics).
Put a period and that's it
Yes, you still include a period within the quotation marks if the quoted material itself is a complete sentence and it comes at the end of your sentence.
Yes, it is standard to include a period after ".com" when it ends a sentence.
The minimum period is two years and can be as long as ten years.