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What is the effect of excessive organic matter decomposition on dissolved oxygen levels in water?

Options

  1. AIt increases dissolved oxygen levels
  2. BIt has no effect on dissolved oxygen levels
  3. CIt decreases dissolved oxygen levels
  4. DIt stabilizes dissolved oxygen levels

Correct answer

C. It decreases dissolved oxygen levels

Step-by-step solution

Excessive decomposition of organic matter in water leads to a reduction in dissolved oxygen levels, which can be harmful to aquatic life.

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