This document provides guidance on writing cause and effect paragraphs. It discusses the purpose of cause and effect paragraphs, which is to understand why something occurs or the results of an event. It also discusses achieving unity and coherence in these paragraphs. There are two common organizational patterns - effect to cause, where the topic sentence introduces an effect and then discusses causes, and cause to effect, where the topic sentence introduces a cause and then discusses effects. The document provides sample paragraphs and outlines for each pattern as well as vocabulary words that are useful for linking causes and effects.