5th Class Science Pollution and Calamities Question Bank Pollution and Calamities

  • question_answer
    Bio-magnification is the process, in which

    A)  Accumulation of harmful and toxic chemicals at each trophic level

    B)  Excessive growth of weeds and plant on water surface            

    C)  Conversion of harmful things to useful things         

    D)  None of these

    Correct Answer: A

    Solution :

    (a) Not Available


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