Final answer:
Subject-by-subject organization is a method of organizing information in which each subject is discussed separately. It is commonly used in comparison or contrast essays.
Step-by-step explanation:
Subject-by-subject organization is a method of organizing information in which each subject is discussed separately. In a comparison or contrast essay, this means that all the information about one subject is presented first, followed by the information about the second subject. For example, if you were comparing two novels, you would discuss all the details of the first novel before moving on to discuss the details of the second novel.