Coordinate structures are appropriate only when you intend to draw the reader’s attention equally to two or more ideas:
If one idea is more important than another—or if a coordinating conjunction does not clearly signal the relation between the ideas—you should subordinate the lesser idea.
Three independent clauses were excessive. The least important idea has become a prepositional phrase.
Exercise: Identifying coordination
Exercise: Identifying subordination
Exercise: Identifying sentence emphasis 1
Exercise: Identifying sentence emphasis 2
Exercise: Combining choppy sentences
Exercise: Using coordination and subordination 1
Exercise: Using coordination and subordination 2
Exercise: Using coordination and subordination 3
coordinating conjunction and, but, or, nor, for, so, yet; used to join elements of equal grammatical form.