9th Class Science Natural resources Question Bank Natural Resources

  • question_answer
    Signs of eutrophication of water bodies include.

    A) reduced oxygen demand

    B) rapid decomposition of organic matter.

    C) algal bloom.  

    D) fluorosis.

    Correct Answer: C

    Solution :

    Eutrophication is nutrient enrichment (i.e., the addition of nitrates and phosphates) water bodies that results in the growth of aquatic plants, especially algae causing colouration of water known as algal bloom. It leads to the depletion of dissolved oxygen in water.


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