You will need to provide the text that you are analysing for a specific answer, but basically, you are looking for any time where the author has used describing words that you would use for humans on object or animal, or where the author is making the object/animal use human characteristics like speech.
the effect that this may have on the piece could be that it creates a friendlier atmosphere if the object/animals are described in a positive and useful way but it can work in reverse as well.
Typically in the introduction paragraph, the first sentence in the essay is the topic sentence.
Structure
A text can basically be built/arranged/organized in one of five ways: Sequence, which is the structure that describes steps or a certain order. Problem/solution is the structure that covers a problem and a solution and focuses on the events that took place in order to reach the solution. Compare/contrast is the structure that compares the likenesses and contrasts the differences of things. Description is the structure that goes over the details of something. And, cause/effect is the structure that highlights how something caused something else to happen.
Additionally, all five structures can be utilized within one of the four text types—narrative, expository, technical, and/or persuasive.