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Railways Sample Paper RRBs Assistant Loco Pilot and Technician CBT STAGE-I Sample Paper-20

  • question_answer
    Phosphates and nitrates entering a lake cause an explosive growth of algae, this is called

    A)  aestivation       

    B)  mutualism

    C)  humus 

    D)  an algal bloom

    Correct Answer: D

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