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Why does water covered with excessive algal growth become polluted?

Options

  1. AGrowth of algae covers the water surface and reduces the concentration of oxygen in water. This leads to anaer
  2. BAlgal growth enhances water quality by increasing oxygen levels.
  3. CAlgal growth in water has no impact on its pollution status.
  4. DAlgal growth promotes the removal of pollutants from water.

Correct answer

A. Growth of algae covers the water surface and reduces the concentration of oxygen in water. This leads to anaer

Step-by-step solution

Correct Option is : (A) Growth of algae covers the water surface and reduces the concentration of oxygen in water. This leads to anaerobic conditions, commonly with accumulation of obnoxious decay and animal death.

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