unifiedcoherentwell developed
A paragraph is unified when all the sentences in the paragraph are focused on one central thought or on a single topic; when the writer wishes to introduce a new thought or topic, he should begin a new paragraph. A paragraph is coherent when it develops naturally and smoothly, and one sentence leads logically to another. There are many ways to develop a paragraph, for example, by process, by cause and effect, by comparison and contrast, etc.