I'm not sure which sentences you are talking about but here are the definitions.
An independent clause is a group of words with a subject and a predicate. It expresses a complete thought and can stand alone as a sentence.
A dependent clause is a group of words with a subject and a verb. These clauses include adverb clauses, adjective clauses and noun clauses.
the study of and knowledge about the physical world and natural laws
hope it helps u mate
Its known as a Complex sentence.
