Dear
vedanshuCombining Independent Clauses with Coordinating ConjunctionsTwo or more independent clauses (i.e., complete sentences) can be combined using a coordinating conjunction. If the combined sentences are long, a comma is normally used before the conjunction. However, the comma is usually omitted if the combined sentence is short.
The sun was shining. The birds were singing.
The sun was shining and the birds were singing.
Sometimes, in informal writing, conjunction can begin a sentence.
The sun was shining. And the birds were singing.
The conjunctions so (meaning “therefore,” “as a result of”), for (meaning “because”) and yet (meaning “but,” “nevertheless”) are also used to connect independent clauses. A comma is almost always used before these words when they are used as coordinating conjunctions.
She was angry, so she yelled at her brother.
Brad was excited, for he had won the contest.
The basketball player was tall, yet quick.
However, take care in identifying these words as they have other meanings in other structures.
So is also used in comparisons (She is not so old as her sister.), or as an adjective that means “very” (Angela is so sweet!).
For is also used as a preposition (She waited for her friend.).
Yet it is also used as an adverb, meaning “up to this time” (Her friend hasn’t arrived yet.).
I hope this helps