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Dissolved oxygen in water is very important for aquatic life. What processes are responsible for the reduction of dissolved oxygen in water?

Options

  1. APhotosynthesis and respiration by aquatic plants and animals.
  2. BAeration and wind action on the water surface.
  3. CBacterial decomposition of organic matter.
  4. DAbsorption of oxygen from the atmosphere.

Correct answer

C. Bacterial decomposition of organic matter.

Step-by-step solution

Correct Option is : (C) Bacterial decomposition of organic matter.

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