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<br />". <br /> <br />e <br /> <br />e <br /> <br />9 <br /> <br />II. Pollution (chronic and toxic) and entrophication <br />A. Industrial <br />B. Agricultural <br />C. Mun'icipal <br />D. Salinity <br />E. Change in Sedimentation -fineness of sediment <br /> <br />III. Parasites <br />IV. Competition <br />V. Predation <br />VI. Change in Prey <br />VII. Fishing Pressure <br />