Concentration of Oxygen in Water Temperature (°C) Oxygen Concentration in Freshwater (ppm) Oxygen Concentration in Seawater (ppm) 1 14.0 11.0 10 11.5 9.0 15 10.0 8.0 20 9.0 7.5 25 8.0 7.0 30 7.5 6.0

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