How do humans affect dissolved oxygen in water?
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Dissolved oxygen concentrations are constantly affected by diffusion and aeration, photosynthesis, respiration and decomposition. While water equilibrates toward 100% air saturation, dissolved oxygen levels will also fluctuate with temperature, salinity and pressure changes
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As the industrialisation is increasing so pollution through disposal from industries and factories is increasing so the oxygen levels also get affected .Also the harmful substance pollute the water.
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