Analysis examines a subject by evaluating one of its aspects-- weighing evidence and possible causal linkages. It resembles other forms of paragraph development, especially classification and division. The object of analysis, however, is to get to the center of how something works. The following paragraph considers the link between cancer, poverty, and stress.
One possible explanation for these statistics on cancer can be found in the high levels of stress associated with poverty. Studies have found that stress can dampen the immune system, the body's first line of defense against cancer, and experiments with animals have shown that a stressful environment can enhance the growth of a variety of tumors. The link between poverty, stress, and cancer mortality in humans has not been proven, but studies have shown a link between stress and other illnesses.
--Thomas D. Fahey, Paul M. Insel, and Walton T. Roth, Fit and Well: Core Concepts in Physical Fitness and Wellness