Why might an author use logos to persuade readers?

You are reading an informational text for english class, and you find a lot of words you don't know. your teacher says you don't need to look up all of them in the dictionary, only the ones you need to get the main point of the text. how could text features you figure out which words to look up?

Compare and contrast spoon river anthology

How does the author support the claim that ordinary and digital mail are very different?