Bombingham hero’s journey

Writers try to let us know what is central to their writing. when we notice words such as "meanwhile," "afterward," "before," or "previously," an author is letting us know the order in which events happen. a paragraph that mostly uses these key words is arranged in what structural form?

"dogs make wonderful pets because they us stay happy and healthy"the topic sentence is "dogs make wonderful pets" i need writing a sentence that is unrelated to the topic and can be eliminated.

Could someone me with this question?