This paragraph is stating that no matter who, or what you are, we all come from the same blood and live on the same earth.
Answer:
He is fascinated by Stargirl's unusual behavior, and eventually gets close to her and enters into her world. He also feels the pull to be normal, and he tries to help Stargirl understand that. Leo is more self-aware than either Stargirl or his high school peers. He analyzes the behavior of the group toward Stargirl.
Explanation:
I love this book
If we say simple predicate, this only refers to the main verb that is used in the sentence. So based on the given sentence above, the simple predicate is the word "arrived" and this is the main verb which describes the subject which is "nurse". Hope this answers your question.