Using the topic "Exposure to particulate matter and impact on health" Develop a risk characterization report to include the following: A brief executive summary that introduces the main parameters/scope, approach, objectives and goals of the Risk Characterization Report. A description of any applicable conceptual model (i.e., what is the predicted outcome, or assessment endpoint) and description of relationships between exposure and outcomes. A description of the data sources you would use to develop your conclusions A summary, including risk estimates and adversity evaluations A description of limitations, including examination of any uncertainties and how best to address them