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, increase in temperature and CO2) in the success and consumption by an Amazonian-stream shredder invertebrate. We tested three hypotheses. (1) Increased microplastic levels and weather change reduce shredder success. We thought that the combined stresses would increase toxic anxiety. (2) Increased concentrations of microplastics have side effects on shredder food consumption. We thought that obstruction of the intestinal tract by microplastics would cause decreased ability to ab