a -word paper investigating a historical water contamination event. Examples include but are not limited to: your chosen historical water contamination event. the following questions in your paper:sufficient details, including data, specific location, specific examples, etc. to be more comprehensive and persuasive. . A good introduction provides an overview of what the paper is about and why the topic was selected. A good conclusion provides a wrap-up of what was discussed and includes key take home message(s). your paper consistent with APA guidelines.