Paragraph structure

Read this 5-sentence standalone paragraph on smoking and respond to the questions thoroughly: There are serious health hazards linked to smoking. First, smoking has been linked to lung diseases such as emphysema and chronic bronchitis, as well as lung cancer. Second, research shows that smokers are at a greater risk for heart disease. Finally, there is substantial research that shows even second-hand or passive smoke can adversely affect the health of those exposed to it. Clearly, smoking is a dangerous habit that should be avoided.

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