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What is Dissolved Oxygen?Dissolved oxygen is the amount of oxygen dissolved in the water. It is the oxygen that aquatic plants and animals use to live. Dissolved oxygen is often called DO for short. Why is Dissolved Oxygen Important?Just as we need air to breathe, aquatic organisms need dissolved oxygen to live. Fish, invertebrates, bacteria, and plants all need dissolved oxygen for respiration. Dissolved oxygen is also needed for the decomposition of organic matter.
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Air Quality
