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Hypothesis. The concentrations of nitrates and phosphates will prove to be significantly less in the water sample taken from water as it leaves the wetlands than water samples taken from the Olentangy River. . Studies have shown that wetlands act as sinks for dissolved materials including calcite whose precipitation is thermodynamically favored in the higher temperatures commonly found in wetlands. Since wetlands act as a filter for pollutants of all kinds the surrounding ecosystems tend to r29
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