the chemical she found in the river samples is commonly used in the production of photographic film. About 20 miles upstream from where she took her samples, there is a small factory near the river. the factory produces film that is used for medical and dental X-rays. 1. Some residents have argued that pollution from the factory is causing cancer in their community. Identify and explain strengths and weaknesses of this conclusion. 2. As a responsible citizen of this community, identify and explain responsible civic actions that you might take to engage the community in addressing this situation. Solution here ur ans http://www4.ncsu.edu/~damcconn/prepost_ct2exercise.html.